2012 Annular Eclipse - photographing it
I’ve “snagged” a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-up” widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so I’m thinking the “date” is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours. Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I don’t think so, but I am posing the question. Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible) I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire? Opinions please Joan .
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse. It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe ________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it I’ve “snagged” a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-up” widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so I’m thinking the “date” is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours. Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I don’t think so, but I am posing the question. Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible) I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire? Opinions please Joan . _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
A filter for viewing, of course. That's the beauty of a digital camera, you can mimic high speed film (mine up to 1600) with an extremely short exposure. I've been thinking about Cedar Breaks proper (not the pull out) the main location. You would have to have a 50mm lens (minimum) to take it all in. A wider field lens is probably more appropriate. But to get a "ring of fire" over Cedar Breaks, that would really be something. It's negated if you have to have a solar filter. On the other hand, with 8% of the sun still exposed, even if you shot 1600 and a short exposure, would it still be over exposed - the sun, I mean. Still, it just might be worth the attempt. It also depends on exactly where the sun is located in relation to Cedar Breaks. This also presumes putting the camera on a tripod. Still worth the attempt, an "almost" photo could be "improved" with a computer program, but I would hate to do that because it becomes less "real" and more of the manipulator's personal impression (it could still be spectacular). ----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:25:18 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it Hi Joan, You absolutely need a solar filter for viewing a partial eclipse. It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe ________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it I’ve “snagged” a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-up” widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so I’m thinking the “date” is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours. Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I don’t think so, but I am posing the question. Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible) I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire? Opinions please Joan . _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Iâve âsnaggedâ a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a âpop-upâ widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so Iâm thinking the âdateâ is based on UT and not local time. But I donât recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours.Â
Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I donât think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees â thatâs above the horizon, right? Even if there are mountains to the west in the distance, wonât that affect what we see if we are just outside of Kanarraville. Donât we want to be higher â i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there â probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, wonât you still get a reasonably centered ring of fire?Â
Opinions please
Joan .Â
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Thanks Erik, that is helpful. I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then. It will definitely be cold - if they are open at all. Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes. It would be a lot less at Cedar Breaks. Less time for a good shot. I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines. As I recall, it is, but all my thoughts are flotsom if it isn't. The polariing filter is also a big help. Didn't think of that. I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon. I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began. That may be why I got a decent picture. Thus my question about 8% of the sun and the need for a filter. Thanks for the response. ----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
I’ve “snaggedâ€� a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-upâ€� widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so I’m thinking the “dateâ€� is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours.Â
Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I don’t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire?Â
Opinions please
Joan .Â
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
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HEHE, Cedar Breaks is well within the path AND the time of maximum eclipse is about 4 seconds short of the maxium time. Now, if I can deal with the issues Erik raised .... ----- Original Message ----- From: jcarman6@q.com To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:03:00 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it Thanks Erik, that is helpful. I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then. It will definitely be cold - if they are open at all. Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes. It would be a lot less at Cedar Breaks. Less time for a good shot. I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines. As I recall, it is, but all my thoughts are flotsom if it isn't. The polariing filter is also a big help. Didn't think of that. I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon. I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began. That may be why I got a decent picture. Thus my question about 8% of the sun and the need for a filter. Thanks for the response. ----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
I’ve “snaggedâ€� a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-upâ€� widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so I’m thinking the “dateâ€� is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours.Â
Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I don’t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire?Â
Opinions please
Joan .Â
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
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There probably are some sites in SE Utah that may be good as well. I am going to plot the path with recreation maps I have that show all campgrounds and view points with elevations. I would not be surprised if a lot of people from California and Arizona come to Cedar City area. Arizona, Nevada, and California have a lot of amateur astronomers. I am sure photographers are probably seeking something more scenic than Kanarville.
Snow at Bryce may also pose some problems, it is kind of early for the Astro Festival. I guess another question is how prone to damage are digital cameras to solar radiation? HEHE, Cedar Breaks is well within the path AND the time of maximum eclipse
is about 4 seconds short of the maxium time. Now, if I can deal with the issues Erik raised ....
----- Original Message ----- From: jcarman6@q.com To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:03:00 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Thanks Erik, that is helpful. I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then. It will definitely be cold - if they are open at all. Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes. It would be a lot less at Cedar Breaks. Less time for a good shot. I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines. As I recall, it is, but all my thoughts are flotsom if it isn't. The polariing filter is also a big help. Didn't think of that.
I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon. I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began. That may be why I got a decent picture. Thus my question about 8% of the sun and the need for a filter.
Thanks for the response.
----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera,ÃÂ but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Iââ¬â¢ve ââ¬Åsnaggedââ¬ï¿½ a map of the center lineàfrom the NASA website.àIt shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude .àThen a ââ¬Åpop-upââ¬ï¿½ widow appeared, showingàthe duration and event times.àMuch to my dismay, the event times show the date 2012/05/21.àThe time was listed in UT, so Iââ¬â¢m thinking the ââ¬Ådateââ¬ï¿½ is based on UT and not local time.àBut I donââ¬â¢t recall how much of a difference there is between UT and MST.àThe UT for maximum eclipse was 01:33:48 0.àIs there that much difference between UT and MST? I guess it really is only about 7 hours.ÃÂ
Also, someone mentioned that the coverage would be 92%.àThat still leaves a lot of sun around the edges, although substantially reduced.àDo I need a solar filter for the camera?àI donââ¬â¢t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees ââ¬â thatââ¬â¢s above the horizon, right?àEven if there are mountains to the west in the distance, wonââ¬â¢t that affect what we see if we are just outside of Kanarraville.àDonââ¬â¢t we want to be higher ââ¬â i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline)àEasy to drive to.àIf you are there ââ¬â probably slightly north of Cedar City, how much is the eclipse impacted?àWould you still get the ring of fire (centered)?àAs the moon is passing in front of the sun, even if you are at Cedar City, wonââ¬â¢t you still get a reasonably centered ring of fire?ÃÂ
Opinions please
JoanÃÂ .ÃÂ
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I don't think a huge number of people will come to Utah. In 1995 I drove to the El Paso vicinity to meet up with SLAS members for the annular eclipse, and I don't remember seeing many others. -- Joe ________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, September 12, 2011 11:19 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
There probably are some sites in SE Utah that may be good as well. I am going to plot the path with recreation maps I have that show all campgrounds and view points with elevations. I would not be surprised if a lot of people from California and Arizona come to Cedar City area. Arizona, Nevada, and California have a lot of amateur astronomers. I am sure photographers are probably seeking something more scenic than Kanarville.
Snow at Bryce may also pose some problems, it is kind of early for the Astro Festival. I guess another question is how prone to damage are digital cameras to solar radiation? HEHE, Cedar Breaks is well within the path AND the time of maximum eclipse
is about 4 seconds short of the maxium time. Now, if I can deal with the issues Erik raised ....
----- Original Message ----- From: jcarman6@q.com To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:03:00 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Thanks Erik, that is helpful. I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then. It will definitely be cold - if they are open at all. Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes. It would be a lot less at Cedar Breaks. Less time for a good shot. I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines. As I recall, it is, but all my thoughts are flotsom if it isn't. The polariing filter is also a big help. Didn't think of that.
I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon. I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began. That may be why I got a decent picture. Thus my question about 8% of the sun and the need for a filter.
Thanks for the response.
----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
I’ve “snagged� a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-up� widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so I’m thinking the “date� is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours.ÂÂ
Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I don’t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire?ÂÂ
Opinions please
Joan .ÂÂ
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I think that was when I first met you Joe, I remember 30-40 people at the location we had chosen, I recall some planned activities in town so that may have kept people in the city. As I recall you stayed at the same hotel, or at least had breakfast at the same location. It was east of Las Cruzes, New Mexico. The Mexican Eatery I had lunch at was memorable. I think interest in Astronomy has grown since then. It was not the same experience as a total eclipse, but still spectacular. It was well after sunrise, 10 or 11 as I recall. There is a much larger area that an annular can be viewed from.
I brought the clubs DayStar and was well worthwhile. H-Alpha scopes are also much more common than nearly 20 years ago. Depending on the location 30-40 people could be a "crowd". I don't think a huge number of people will come to Utah. In 1995 I drove
to the El Paso vicinity to meet up with SLAS members for the annular eclipse, and I don't remember seeing many others. -- Joe
________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, September 12, 2011 11:19 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
There probably are some sites in SE Utah that may be good as well. I am going to plot the path with recreation maps I have that show all campgrounds and view points with elevations. I would not be surprised if a lot of people from California and Arizona come to Cedar City area. Arizona, Nevada, and California have a lot of amateur astronomers. I am sure photographers are probably seeking something more scenic than Kanarville.
Snow at Bryce may also pose some problems, it is kind of early for the Astro Festival.
I guess another question is how prone to damage are digital cameras to solar radiation?
HEHE, Cedar Breaks is well within the path AND the time of maximum eclipse
is about 4 seconds short of the maxium time. Now, if I can deal with the issues Erik raised ....
----- Original Message ----- From: jcarman6@q.com To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:03:00 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Thanks Erik, that is helpful. I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then. It will definitely be cold - if they are open at all. Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes. It would be a lot less at Cedar Breaks. Less time for a good shot. I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines. As I recall, it is, but all my thoughts are flotsom if it isn't. The polariing filter is also a big help. Didn't think of that.
I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon. I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began. That may be why I got a decent picture. Thus my question about 8% of the sun and the need for a filter.
Thanks for the response.
----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera,Ãâàbut it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Iâââ‰â¢ve ââ∠âsnaggedâââ¬ï¿½ a map of the center lineÃâàfrom the NASA website.ÃâàIt shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude .ÃâàThen a ââ∠âpop-upâââ¬ï¿½ widow appeared, showingÃâàthe duration and event times.ÃâàMuch to my dismay, the event times show the date 2012/05/21.Ãâà The time was listed in UT, so Iâââ‰â¢m thinking the ââ∠âdateâââ¬ï¿½ is based on UT and not local time.ÃâàBut I donâââ‰â¢t recall how much of a difference there is between UT and MST.ÃâàThe UT for maximum eclipse was 01:33:48 0.ÃâàIs there that much difference between UT and MST? I guess it really is only about 7 hours.ÃâÃÂ
Also, someone mentioned that the coverage would be 92%.ÃâàThat still leaves a lot of sun around the edges, although substantially reduced.ÃâàDo I need a solar filter for the camera?Ãâà I donâââ‰â¢t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees âââ‰â¬Å thatâââ‰â¢s above the horizon, right?ÃâàEven if there are mountains to the west in the distance, wonâââ‰â¢t that affect what we see if we are just outside of Kanarraville.ÃâàDonâââ‰â¢t we want to be higher âââ‰â¬Å i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline)ÃâàEasy to drive to.ÃâàIf you are there âââ‰â¬Å probably slightly north of Cedar City, how much is the eclipse impacted?ÃâàWould you still get the ring of fire (centered)?Ãâà As the moon is passing in front of the sun, even if you are at Cedar City, wonâââ‰â¢t you still get a reasonably centered ring of fire?ÃâÃÂ
Opinions please
JoanÃâà.ÃâÃÂ
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Yes, Erik, that was it! I thought it was beautiful and interesting. And you're right about interest in astronomy growing.Thanks, Joe ________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, September 12, 2011 1:14 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
I think that was when I first met you Joe, I remember 30-40 people at the location we had chosen, I recall some planned activities in town so that may have kept people in the city. As I recall you stayed at the same hotel, or at least had breakfast at the same location. It was east of Las Cruzes, New Mexico. The Mexican Eatery I had lunch at was memorable. I think interest in Astronomy has grown since then. It was not the same experience as a total eclipse, but still spectacular. It was well after sunrise, 10 or 11 as I recall. There is a much larger area that an annular can be viewed from.
I brought the clubs DayStar and was well worthwhile. H-Alpha scopes are also much more common than nearly 20 years ago. Depending on the location 30-40 people could be a "crowd". I don't think a huge number of people will come to Utah. In 1995 I drove
to the El Paso vicinity to meet up with SLAS members for the annular eclipse, and I don't remember seeing many others. -- Joe
________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, September 12, 2011 11:19 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
There probably are some sites in SE Utah that may be good as well. I am going to plot the path with recreation maps I have that show all campgrounds and view points with elevations. I would not be surprised if a lot of people from California and Arizona come to Cedar City area. Arizona, Nevada, and California have a lot of amateur astronomers. I am sure photographers are probably seeking something more scenic than Kanarville.
Snow at Bryce may also pose some problems, it is kind of early for the Astro Festival.
I guess another question is how prone to damage are digital cameras to solar radiation?
HEHE, Cedar Breaks is well within the path AND the time of maximum eclipse
is about 4 seconds short of the maxium time. Now, if I can deal with the issues Erik raised ....
----- Original Message ----- From: jcarman6@q.com To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:03:00 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Thanks Erik, that is helpful. I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then. It will definitely be cold - if they are open at all. Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes. It would be a lot less at Cedar Breaks. Less time for a good shot. I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines. As I recall, it is, but all my thoughts are flotsom if it isn't. The polariing filter is also a big help. Didn't think of that.
I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon. I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began. That may be why I got a decent picture. Thus my question about 8% of the sun and the need for a filter.
Thanks for the response.
----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs without filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera, but it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
I’ve “snagged� a map of the center line from the NASA website. It shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a “pop-up� widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21.  The time was listed in UT, so I’m thinking the “date� is based on UT and not local time. But I don’t recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours.ÂÂÂ
Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera?  I don’t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees – that’s above the horizon, right? Even if there are mountains to the west in the distance, won’t that affect what we see if we are just outside of Kanarraville. Don’t we want to be higher – i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there – probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)?  As the moon is passing in front of the sun, even if you are at Cedar City, won’t you still get a reasonably centered ring of fire?ÂÂÂ
Opinions please
Joan .ÂÂÂ
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I still have the article you wrote for the Desert News about that trip.
Yes, Erik, that was it! I thought it was beautiful and interesting. And
you're right about interest in astronomy growing.Thanks, Joe
________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, September 12, 2011 1:14 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
I think that was when I first met you Joe, I remember 30-40 people at the location we had chosen, I recall some planned activities in town so that may have kept people in the city. As I recall you stayed at the same hotel, or at least had breakfast at the same location. It was east of Las Cruzes, New Mexico. The Mexican Eatery I had lunch at was memorable. I think interest in Astronomy has grown since then. It was not the same experience as a total eclipse, but still spectacular. It was well after sunrise, 10 or 11 as I recall. There is a much larger area that an annular can be viewed from.
I brought the clubs DayStar and was well worthwhile. H-Alpha scopes are also much more common than nearly 20 years ago.
Depending on the location 30-40 people could be a "crowd".
I don't think a huge number of people will come to Utah. In 1995 I drove
to the El Paso vicinity to meet up with SLAS members for the annular eclipse, and I don't remember seeing many others. -- Joe
________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, September 12, 2011 11:19 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
There probably are some sites in SE Utah that may be good as well. I am going to plot the path with recreation maps I have that show all campgrounds and view points with elevations. I would not be surprised if a lot of people from California and Arizona come to Cedar City area. Arizona, Nevada, and California have a lot of amateur astronomers. I am sure photographers are probably seeking something more scenic than Kanarville.
Snow at Bryce may also pose some problems, it is kind of early for the Astro Festival.
I guess another question is how prone to damage are digital cameras to solar radiation?
HEHE, Cedar Breaks is well within the path AND the time of maximum eclipse
is about 4 seconds short of the maxium time.ÃÂ Now, if I can deal with the issues Erik raised ....
----- Original Message ----- From: jcarman6@q.com To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 12:03:00 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Thanks Erik, that is helpful.ÃÂ I didn't think about 10,000 feet in May. You're right, there will probably still be snow on the ground then.ÃÂ It will definitely be cold - if they are open at all.ÃÂ Â Also the more I think about it, the maximum eclipse at centerline is 4-1/2 minutes.ÃÂ It would be a lot less at Cedar Breaks.ÃÂ Less time for a good shot.ÃÂ I need to go back to the NASA site to see if Cedar Breaks is even inside the blue lines.ÃÂ As I recall, it is, but all my thoughts are flotsom if it isn't.ÃÂ The polariing filter is also a big help.ÃÂ Didn't think of that.
I recall, when I went to LA for the Annular a few years after 1991, that it too was at sunset, on the horizon.ÃÂ I took a picture without filter, BUT there were lots of clouds, in fact the clouds blocked the sun just at maximum eclipse began.ÃÂ That may be why I got a decent picture.ÃÂ Thus my question about 8% of the sun and the need for a filter.
Thanks for the response.
----- Original Message ----- From: erikhansen@thebluezone.net To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Sunday, September 11, 2011 10:43:24 AM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
Being so low on the horizon may afford photographs withoutÃÂ filter or perhaps a polarizing filter.
Hi Joan, You absolutely need a solar filter for viewing a partial eclipse.
It's only safe to look at a solar eclipse during totality. I suppose you could take an extremely fast photo of the partial without a solar filter, without harming the camera,ÃÆââ¬Å¡Ãâàbut it would be hard to take a picture without looking through the viewfinder or looking at the sun's vicinity while holding the camera up to it. I'd get solar filters for viewing and photography. Best wishes, Joe
________________________________ From: J E CARMAN <jcarman6@q.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, September 10, 2011 11:54 PM Subject: [Utah-astronomy] 2012 Annular Eclipse - photographing it
IÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢ve ÃÆââââ¬Å¡Ã¬Ãâ¦Ã¢â¬ÅsnaggedÃÆââââ¬Å¡Ã¬Ã¯Ã¿Ã½ a map of the center lineÃÆââ¬Å¡Ãâàfrom the NASA website.ÃÆââ¬Å¡ÃâàIt shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude .ÃÆââ¬Å¡ÃâàThen a ÃÆââââ¬Å¡Ã¬Ãâ¦Ã¢â¬Åpop-upÃÆââââ¬Å¡Ã¬Ã¯Ã¿Ã½ widow appeared, showingÃÆââ¬Å¡Ãâàthe duration and event times.ÃÆââ¬Å¡ÃâàMuch to my dismay, the event times show the date 2012/05/21.ÃÆââ¬Å¡ÃâààThe time was listed in UT, so IÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢m thinking the ÃÆââââ¬Å¡Ã¬Ãâ¦Ã¢â¬ÅdateÃÆââââ¬Å¡Ã¬Ã¯Ã¿Ã½ is based on UT and not local time.ÃÆââ¬Å¡ÃâàBut I donÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢t recall how much of a difference there is between UT and MST.ÃÆââ¬Å¡ÃâàThe UT for maximum eclipse was 01:33:48 0.ÃÆââ¬Å¡ÃâàIs there that much difference between UT and MST? I guess it really is only about 7 hours.ÃÆââ¬Å¡ÃâÃÂ
Also, someone mentioned that the coverage would be 92%.ÃÆââ¬Å¡ÃâàThat still leaves a lot of sun around the edges, although substantially reduced.ÃÆââ¬Å¡ÃâàDo I need a solar filter for the camera?ÃÆââ¬Å¡ÃâààI donÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢t think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees ÃÆââââ¬Å¡Ã¬Ã¢â∠â thatÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢s above the horizon, right?ÃÆââ¬Å¡ÃâàEven if there are mountains to the west in the distance, wonÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢t that affect what we see if we are just outside of Kanarraville.ÃÆââ¬Å¡ÃâàDonÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢t we want to be higher ÃÆââââ¬Å¡Ã¬Ã¢â∠â i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline)ÃÆââ¬Å¡ÃâàEasy to drive to.ÃÆââ¬Å¡ÃâàIf you are there ÃÆââââ¬Å¡Ã¬Ã¢â∠â probably slightly north of Cedar City, how much is the eclipse impacted?ÃÆââ¬Å¡ÃâàWould you still get the ring of fire (centered)?ÃÆââ¬Å¡ÃâààAs the moon is passing in front of the sun, even if you are at Cedar City, wonÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢t you still get a reasonably centered ring of fire?ÃÆââ¬Å¡ÃâÃÂ
Opinions please
JoanÃÆââ¬Å¡Ãâà.ÃÆââ¬Å¡ÃâÃÂ
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It was east in the Organ Mountains.
Hi Joe,
I was there, with a friend (Dave Sanders); where did you observe from? We chased all over the area south of the city trying to dodge the damn clouds. We did get some good pictures...
Norm
Joe Bauman wrote:
I don't think a huge number
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Yes, that's how I remember it too. -- Joe ________________________________ From: "erikhansen@thebluezone.net" <erikhansen@thebluezone.net> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Tuesday, September 13, 2011 12:31 PM Subject: Re: [Utah-astronomy] 2012 Annular Eclipse - photographing it
It was east in the Organ Mountains.
Hi Joe,
I was there, with a friend (Dave Sanders); where did you observe from? We chased all over the area south of the city trying to dodge the damn clouds. We did get some good pictures...
Norm
Joe Bauman wrote:
I don't think a huge number
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On 9/11/11, jcarman6@q.com <jcarman6@q.com> wrote:
The polariing filter is also a big help. Didn't think of that.
If you plan on using a polarizing filter for throughput reduction, you'll need the type with 2 filters in a common cell, so you can rotate one of them. In this instance, they function as a variable neutral density filter, not a polarizer as far as the camera chip is concerned. Using a single polarizing filter won't do a thing aimed directly at the sun. They reduce solar glare and improve contrast in snapshots, but the maximum effect is achieved when the filter's bias is at 90-degrees relative to the illumination angle. Photographers should, as usual, take some practice sunset shots now so you can narrow-down any bracketing on eclipse day.
Orion cells a set that rotate to give 50% to 0% transmission. I use them on the moon.
On 9/11/11, jcarman6@q.com <jcarman6@q.com> wrote:
The polariing filter is also a big help. Didn't think of that.
If you plan on using a polarizing filter for throughput reduction, you'll need the type with 2 filters in a common cell, so you can rotate one of them. In this instance, they function as a variable neutral density filter, not a polarizer as far as the camera chip is concerned.
Using a single polarizing filter won't do a thing aimed directly at the sun. They reduce solar glare and improve contrast in snapshots, but the maximum effect is achieved when the filter's bias is at 90-degrees relative to the illumination angle.
Photographers should, as usual, take some practice sunset shots now so you can narrow-down any bracketing on eclipse day.
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On 9/12/11, erikhansen@thebluezone.net <erikhansen@thebluezone.net> wrote:
Orion cells a set that rotate to give 50% to 0% transmission. I use them on the moon.
That's the type you want, and they are for density only. Many DSLR camera "polarizing filters" are not for variable density, just glare reduction in outdoor photos. Those won't work in this application as they are a single filter, not a double.
Aren't there a variety of densities available in photographic (compatible with camera threads) polarizing filters? I do have an adapter so 2" filters fit my camera. How much transmission would be too much? Over 50% or under 50%?
On 9/12/11, erikhansen@thebluezone.net <erikhansen@thebluezone.net> wrote:
Orion cells a set that rotate to give 50% to 0% transmission. I use them on the moon.
That's the type you want, and they are for density only.
Many DSLR camera "polarizing filters" are not for variable density, just glare reduction in outdoor photos. Those won't work in this application as they are a single filter, not a double.
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On 9/12/11, erikhansen@thebluezone.net <erikhansen@thebluezone.net> wrote:
Aren't there a variety of densities available in photographic (compatible with camera threads) polarizing filters? I do have an adapter so 2" filters fit my camera. How much transmission would be too much? Over 50% or under 50%?
Standard "neutral density" photographic filters are not commonly variable polarizers, so if picking only one, I'm just not the guy to ask about solar photography. Jay, any idea?
Well I checked the Thousand Oaks website, they do sell glass solar filters for cameras is varying sizes.
On 9/12/11, erikhansen@thebluezone.net <erikhansen@thebluezone.net> wrote:
Aren't there a variety of densities available in photographic (compatible with camera threads) polarizing filters? I do have an adapter so 2" filters fit my camera. How much transmission would be too much? Over 50% or under 50%?
Standard "neutral density" photographic filters are not commonly variable polarizers, so if picking only one, I'm just not the guy to ask about solar photography.
Jay, any idea?
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Depending on the kind of winter we have some locations you mention may not be open. Cedar Breaks opens in late may, I recall a star party they had there years back on a ridge well above the visitor center, spectacular sun set but seems unlikely the snow will be gone by then.
Chaco Canyon could be a interesting place to view it from. Iâve âsnaggedâ a map of the center line from the NASA website. It
shows the center line crossing US Highway 91 just south of Kanarraville. There is a specific longitude and latitude . Then a âpop-upâ widow appeared, showing the duration and event times. Much to my dismay, the event times show the date 2012/05/21. The time was listed in UT, so Iâm thinking the âdateâ is based on UT and not local time. But I donât recall how much of a difference there is between UT and MST. The UT for maximum eclipse was 01:33:48 0. Is there that much difference between UT and MST? I guess it really is only about 7 hours.
Also, someone mentioned that the coverage would be 92%. That still leaves a lot of sun around the edges, although substantially reduced. Do I need a solar filter for the camera? I donât think so, but I am posing the question.
Also, if the eclipse is taking place at about 10 or 11 degrees â thatâs above the horizon, right? Even if there are mountains to the west in the distance, wonât that affect what we see if we are just outside of Kanarraville. Donât we want to be higher â i.e, in the mountains to the east of Kanarraville (not sure that is even possible)
I was thinking Cedar Breaks has a pull out (10,000 feet, clean low western horizon, but not near the centerline) Easy to drive to. If you are there â probably slightly north of Cedar City, how much is the eclipse impacted? Would you still get the ring of fire (centered)? As the moon is passing in front of the sun, even if you are at Cedar City, wonât you still get a reasonably centered ring of fire?
Opinions please
Joan .
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participants (6)
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Chuck Hards -
erikhansen＠thebluezone.net -
J E CARMAN -
jcarman6＠q.com
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Joe Bauman -
Norm Hansen