Re: [Utah-astronomy] Moon parallax (and stereo) follow up
Patrick, In no way am I trying to belittle your work in demonstrating the parallax of the Moon against the star field background with the cooperation of the fellow in Hawaii, and also producing a stereo pair of the Moon. Since I am particularly interested in stereo images, Moon included, I did some research to see if it hadn't already been done. As mentioned in my last post, an obvious way to get a stereo pair of the Moon was to use images from its libration cycle. I was surprised to learn how long ago that had been done - in 1859! And, by the man who invented the light bulb, no less! This site shows stereo pairs of the full Moon from the earliest by Warren de la Rue in 1858/59 using the wet-plate collodion process to a Lunar eclipse stereo pair spanning 5 years by Tom Matheson. This site also has a .gif movie showing libration and the apparent size changes of the Moon from October 11 thru November 8, 2007. http://lcni.uoregon.edu/~dow/Marks_photos/stereo_pairs/Apollo_moon/Stereo_pa... I'm sure there are many more stereo images of the Moon out there for those interested in looking further. And, Joe, you can cross your eyes to see stereo. Really. Yes you can! Enjoy, Ed Stimpson
Ed, I'm a little surprised about the comment aimed at me -- I know very well there's a stereo-viewing technique that uses crossed eyes. The free-viewing stereo technique I use is the opposite, with the pairs merging when eyes are more uncrossed than normal. Also, I think there is a bit of a misunderstanding here. Patrick was talking about simultaneous views, not a comparison of the moon at different stages of libration. -- Joe ________________________________ From: Ed <utnatsedj1@xmission.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Saturday, March 2, 2013 11:46 AM Subject: Re: [Utah-astronomy] Moon parallax (and stereo) follow up Patrick, In no way am I trying to belittle your work in demonstrating the parallax of the Moon against the star field background with the cooperation of the fellow in Hawaii, and also producing a stereo pair of the Moon. Since I am particularly interested in stereo images, Moon included, I did some research to see if it hadn't already been done. As mentioned in my last post, an obvious way to get a stereo pair of the Moon was to use images from its libration cycle. I was surprised to learn how long ago that had been done - in 1859! And, by the man who invented the light bulb, no less! This site shows stereo pairs of the full Moon from the earliest by Warren de la Rue in 1858/59 using the wet-plate collodion process to a Lunar eclipse stereo pair spanning 5 years by Tom Matheson. This site also has a .gif movie showing libration and the apparent size changes of the Moon from October 11 thru November 8, 2007. http://lcni.uoregon.edu/~dow/Marks_photos/stereo_pairs/Apollo_moon/Stereo_pa... I'm sure there are many more stereo images of the Moon out there for those interested in looking further. And, Joe, you can cross your eyes to see stereo. Really. Yes you can! Enjoy, Ed Stimpson _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
Joe, Please accept my apology for that comment. I clearly misunderstood the technique you were describing as well as Patrick's intent with the moon parallax images. Ed Stimpson -------------------------------- Quoting Joe Bauman <josephmbauman@yahoo.com>:
Ed, I'm a little surprised about the comment aimed at me -- I know very well there's a stereo-viewing technique that uses crossed eyes. The free-viewing stereo technique I use is the opposite, with the pairs merging when eyes are more uncrossed than normal. Also, I think there is a bit of a misunderstanding here. Patrick was talking about simultaneous views, not a comparison of the moon at different stages of libration. -- Joe
________________________________ From: Ed <utnatsedj1@xmission.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Saturday, March 2, 2013 11:46 AM Subject: Re: [Utah-astronomy] Moon parallax (and stereo) follow up
Patrick,
In no way am I trying to belittle your work in demonstrating the parallax of the Moon against the star field background with the cooperation of the fellow in Hawaii, and also producing a stereo pair of the Moon. Since I am particularly interested in stereo images, Moon included, I did some research to see if it hadn't already been done.
As mentioned in my last post, an obvious way to get a stereo pair of the Moon was to use images from its libration cycle. I was surprised to learn how long ago that had been done - in 1859! And, by the man who invented the light bulb, no less!
This site shows stereo pairs of the full Moon from the earliest by Warren de la Rue in 1858/59 using the wet-plate collodion process to a Lunar eclipse stereo pair spanning 5 years by Tom Matheson.
This site also has a .gif movie showing libration and the apparent size changes of the Moon from October 11 thru November 8, 2007.
http://lcni.uoregon.edu/~dow/Marks_photos/stereo_pairs/Apollo_moon/Stereo_pa...
I'm sure there are many more stereo images of the Moon out there for those interested in looking further.
And, Joe, you can cross your eyes to see stereo. Really. Yes you can!
Enjoy,
Ed Stimpson
_______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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Hi Ed, The stereo images you linked to are great. Especially the ones of the Moon in two eclipses that were years apart (a great example of long term planning). And I liked looking at the ones from the 1850s. Kind of like looking back in time. Agreed that there's little if any real stereo effect in the Hawaii/Utah images. But it was a fun experiment and, as I'm sure most here know, in science even a negative result is still a legitimate result. patrick Sent from my iPad On Mar 2, 2013, at 11:46, Ed <utnatsedj1@xmission.com> wrote:
Patrick,
In no way am I trying to belittle your work in demonstrating the parallax of the Moon against the star field background with the cooperation of the fellow in Hawaii, and also producing a stereo pair of the Moon. Since I am particularly interested in stereo images, Moon included, I did some research to see if it hadn't already been done.
As mentioned in my last post, an obvious way to get a stereo pair of the Moon was to use images from its libration cycle. I was surprised to learn how long ago that had been done - in 1859! And, by the man who invented the light bulb, no less!
This site shows stereo pairs of the full Moon from the earliest by Warren de la Rue in 1858/59 using the wet-plate collodion process to a Lunar eclipse stereo pair spanning 5 years by Tom Matheson.
This site also has a .gif movie showing libration and the apparent size changes of the Moon from October 11 thru November 8, 2007.
http://lcni.uoregon.edu/~dow/Marks_photos/stereo_pairs/Apollo_moon/Stereo_pa...
I'm sure there are many more stereo images of the Moon out there for those interested in looking further.
And, Joe, you can cross your eyes to see stereo. Really. Yes you can!
Enjoy,
Ed Stimpson
I've been exchanging emails with some folks on both sides of Australia about the comet. I asked how it looks to the naked eye and all replies agree that it's not that easy to see and that non-astronomer types usually have to have it pointed out to them. During calls from media yesterday and today I've been advising caution when telling the public about what to expect. One thing we don't need to repeat is overhyping this like was done with Kohoutek and then have the public ignore ISON later this year as so many ignored the truly beautiful Comet West after Kohoutek did not live up to its hype. I'll append a copy of one of the emails from Oz below. Happily both the SPOC and SLC Clear Sky Clocks are showing improving skies for tomorrow so I'm still hoping we will get our first shot at the comet tomorrow. patrick Sent from my iPad From here (latitude -23°) it is a difficult object to show to anybody who is not an astronomer. Visible to the naked eye, when you know where it is, and really at the right time. To early you don’t see it, too late, it’s gone. Nothing to do with Mc Naught in 2006 or Lovejoy for example. I made a video, on a tripod (Canon 5D Mark II with 200mm F/1.8), and placed it on vimeo https://vimeo.com/61354254 It gives a fairly good idea of what is possible to do, in reality, visually I mean, the comet appears fainter. Doesn’t mean of course the comet is not interesting. I placed the images I took so far on http://www.spaceobs.com/perso/recherche/cometes/PanstarrsL4/ You will see many jets coming out of the nucleus. Alain
I had a pretty good sucker hole through the clouds to the western horizon up here in far Northern Utah. Looked hard and took some long exposures with no hint of it. Jared On Friday, March 8, 2013, Patrick Wiggins wrote:
I've been exchanging emails with some folks on both sides of Australia about the comet.
I asked how it looks to the naked eye and all replies agree that it's not that easy to see and that non-astronomer types usually have to have it pointed out to them.
During calls from media yesterday and today I've been advising caution when telling the public about what to expect. One thing we don't need to repeat is overhyping this like was done with Kohoutek and then have the public ignore ISON later this year as so many ignored the truly beautiful Comet West after Kohoutek did not live up to its hype.
I'll append a copy of one of the emails from Oz below.
Happily both the SPOC and SLC Clear Sky Clocks are showing improving skies for tomorrow so I'm still hoping we will get our first shot at the comet tomorrow.
patrick
Sent from my iPad
From here (latitude -23°) it is a difficult object to show to anybody who is not an astronomer. Visible to the naked eye, when you know where it is, and really at the right time. To early you don’t see it, too late, it’s gone. Nothing to do with Mc Naught in 2006 or Lovejoy for example.
I made a video, on a tripod (Canon 5D Mark II with 200mm F/1.8), and placed it on vimeo https://vimeo.com/61354254
It gives a fairly good idea of what is possible to do, in reality, visually I mean, the comet appears fainter.
Doesn’t mean of course the comet is not interesting. I placed the images I took so far on http://www.spaceobs.com/perso/recherche/cometes/PanstarrsL4/
You will see many jets coming out of the nucleus. Alain _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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Thanks for the report Jared. Let's hope for a better outcome next week. patrick On 08 Mar 2013, at 20:18, Jared Smith wrote:
I had a pretty good sucker hole through the clouds to the western horizon up here in far Northern Utah. Looked hard and took some long exposures with no hint of it.
Jared
On Friday, March 8, 2013, Patrick Wiggins wrote:
I've been exchanging emails with some folks on both sides of Australia about the comet.
I asked how it looks to the naked eye and all replies agree that it's not that easy to see and that non-astronomer types usually have to have it pointed out to them.
During calls from media yesterday and today I've been advising caution when telling the public about what to expect. One thing we don't need to repeat is overhyping this like was done with Kohoutek and then have the public ignore ISON later this year as so many ignored the truly beautiful Comet West after Kohoutek did not live up to its hype.
I'll append a copy of one of the emails from Oz below.
Happily both the SPOC and SLC Clear Sky Clocks are showing improving skies for tomorrow so I'm still hoping we will get our first shot at the comet tomorrow.
patrick
Sent from my iPad
From here (latitude -23°) it is a difficult object to show to anybody who is not an astronomer. Visible to the naked eye, when you know where it is, and really at the right time. To early you don’t see it, too late, it’s gone. Nothing to do with Mc Naught in 2006 or Lovejoy for example.
I made a video, on a tripod (Canon 5D Mark II with 200mm F/1.8), and placed it on vimeo https://vimeo.com/61354254
It gives a fairly good idea of what is possible to do, in reality, visually I mean, the comet appears fainter.
Doesn’t mean of course the comet is not interesting. I placed the images I took so far on http://www.spaceobs.com/perso/recherche/cometes/PanstarrsL4/
You will see many jets coming out of the nucleus. Alain _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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It always seems like non-astronomer types need help, they will probably need binoculars too. Anyway, looks like good photo op on March 12, Panstar will be near the crescent moon.
I've been exchanging emails with some folks on both sides of Australia
about the comet.
I asked how it looks to the naked eye and all replies agree that it's not that easy to see and that non-astronomer types usually have to have it pointed out to them.
During calls from media yesterday and today I've been advising caution when telling the public about what to expect. One thing we don't need to repeat is overhyping this like was done with Kohoutek and then have the public ignore ISON later this year as so many ignored the truly beautiful Comet West after Kohoutek did not live up to its hype.
I'll append a copy of one of the emails from Oz below.
Happily both the SPOC and SLC Clear Sky Clocks are showing improving skies for tomorrow so I'm still hoping we will get our first shot at the comet tomorrow.
patrick
Sent from my iPad
From here (latitude -23°) it is a difficult object to show to anybody who is not an astronomer. Visible to the naked eye, when you know where it is, and really at the right time. To early you donât see it, too late, itâs gone. Nothing to do with Mc Naught in 2006 or Lovejoy for example.
I made a video, on a tripod (Canon 5D Mark II with 200mm F/1.8), and placed it on vimeo https://vimeo.com/61354254
It gives a fairly good idea of what is possible to do, in reality, visually I mean, the comet appears fainter.
Doesnât mean of course the comet is not interesting. I placed the images I took so far on http://www.spaceobs.com/perso/recherche/cometes/PanstarrsL4/
You will see many jets coming out of the nucleus. Alain _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
Send messages to the list to Utah-Astronomy@mailman.xmission.com
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participants (5)
-
Ed -
erikhansen＠thebluezone.net -
Jared Smith -
Joe Bauman -
Patrick Wiggins