April 2016 - Utah-Astronomy - mailman.xmission.com

Re: [Utah-astronomy] Last night's lecture
by Joe Bauman 11 Dec '18

11 Dec '18

Brent, speaking of the ISS, I have wondered if it could be put into an orbit that continuously cruised between Earth and Mars. When it swung by Mars it could drop off and retrieved crews. I don't see how the radiation would be any worse than the ISS crews are already exposed to. ------------------------------ On Wed, Feb 25, 2015 8:18 AM MST Brent Watson via Utah-Astronomy wrote: >I attended the lecture last night on trajectories. It was really a good, stimulating talk. Thanks for passing the word along. >There were some interesting side comments made about our launch capabilities and the Mars One effort. Mr. Adamo was not at all enthusiastic about the Mars One effort. His opinion is that the effort is doomed because there is not really a way to assure that folks going there would be safe - primarily from radiation. He has done some work with a former flight surgeon on designing a spacecraft to go to Mars. Their result is that in order to get sufficient shielding (using a water jacket), the spacecraft's mass would be around 380 metric tons. That is for a small crew, probably only about 5 members. For a point of comparison, the ISS mass is 400 metric tons. He made the comment that an astronaut who made this trip could only go to space once in this craft, and then he would be at the limit of radiation exposure for his life. The NASA limit is an increased risk of developing cancer of 5%. >That brings us to our current launch capability. Our latest heavy lift rocket - the one we are currently developing - will have the capability to lift 130 metric tons to a very low earth orbit. So low, in fact, that it would burn up at perigee. The Apollo 17 Saturn 5 rocket lifted 140 metric tons into earth orbit -- higher than the new rocket will go. (I am sorry, but my mind will not allow me to recall the name of our currently being designed rocket.) Recall that it took several dozen shuttle launches to assemble the ISS. The Mars One vehicle would require either a hugely more massive launch rocket or a similar effort to build the craft. >As I mentioned, it was a very intellectually stimulating lecture and did involve several ordinary differential equations. They were nicely explained in English by Mr. Adamo. This was the first time I have seen some real math put to Kepler's laws. There were many charts showing what it takes to leave the earth and go to the moon or Mars. It was a very well done lecture. >The above is my recollection of the lecture, and may not actually represent the opinions of Mr. Adamo. It is only my interpretation of what he said. He knows his stuff, that is apparent. Thanks Patrick and Dr. Sohl for passing the word along. >_______________________________________________ >Utah-Astronomy mailing list >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy > >Send messages to the list to >Utah-Astronomy(a)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".

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Mercury transit
by kharrismar 09 May '16

09 May '16

I'm interested in observing the Mercury transit on May 9. I think it will be visible from here, but I don't know the timing. Can anyone help? Sent from my Verizon Wireless 4G LTE smartphone

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DSLR Mount
by william baker 30 Apr '16

30 Apr '16

I am thinking of taking pictures of the Mercury transit on 9 May 16. I have a Nikon D5500 DSLR that I would like to use to capture this event. Any suggestions on what type of mount I should use to mate the camera to a 10" Dob? All ideas and suggestions will be greatly appreciated. Bill Clear Skies!

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Re: [Utah-astronomy] Mercury transit
by Siegfried Jachmann 25 Apr '16

25 Apr '16

Where is "here?" In Utah the transit will be in progress when the Sun rises. The entire event lasts about 5 1/2 hours. It will end around 1pm MDT. The Salt Lake Astronomical Society has scheduled a public event at the Bangerter Crossing Harmons from 9am until 1pm. 13800 S 150 E On Apr 25, 2016 11:35 AM, "kharrismar" <kharrismar(a)earthlink.net> wrote: I'm interested in observing the Mercury transit on May 9. I think it will be visible from here, but I don't know the timing. Can anyone help? Sent from my Verizon Wireless 4G LTE smartphone _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy(a)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".

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OFFER: Used Telescopes
by James Harvey 21 Apr '16

21 Apr '16

Greetings... I have not posted in some time. Due to issues related to my wife's health, I am "getting out of the business" of astronomy. I don't have much but will offer what I have to this group. OK, here is what I have: Item 1: http://www.amazon.com/MEADE-51501-Polaris-Refractor-Telescope/dp/B00004TDPP FREE, NO CHARGE Item 2: https://www.optcorp.com/pdf/OPT/EDU/4504.pdf FREE. NO CHARGE Item 3: http://www.celestron.com/browse-shop/uncategorized/firstscope-114eq-compact… $50 I have a box with quite a few eyepieces that fit these scopes. Free, no charge. If you are interested, give me a return email or call me at (801) 840-1770. Regards, Jim Harvey

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H Alpha filer
by william baker 21 Apr '16

21 Apr '16

A quick question to two to the open group. What type of H Alpha filer would be best for a 10 Dob? If you have a suggestion, why would you suggest that make or model? Thanks Bill

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Re: [Utah-astronomy] OFFER: Used Telescopes
by michaelcrane17 21 Apr '16

21 Apr '16

Sorry for the double email, the Celestron I'm interested too. I have an 8in dob and, well they aren't the most portable thing. Sent from my T-Mobile 4G LTE Device -------- Original message -------- From: James Harvey <wyominggeezer(a)gmail.com> Date: 04/21/2016 12:06 PM (GMT-07:00) To: utah-astronomy(a)mailman.xmission.com Subject: [Utah-astronomy] OFFER: Used Telescopes Greetings... I have not posted in some time. Due to issues related to my wife's health, I am "getting out of the business" of astronomy. I don't have much but will offer what I have to this group. OK, here is what I have: Item 1: http://www.amazon.com/MEADE-51501-Polaris-Refractor-Telescope/dp/B00004TDPP FREE, NO CHARGE Item 2: https://www.optcorp.com/pdf/OPT/EDU/4504.pdf FREE. NO CHARGE Item 3: http://www.celestron.com/browse-shop/uncategorized/firstscope-114eq-compact… $50 I have a box with quite a few eyepieces that fit these scopes. Free, no charge. If you are interested, give me a return email or call me at (801) 840-1770. Regards, Jim Harvey _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy(a)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".

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Re: [Utah-astronomy] OFFER: Used Telescopes
by michaelcrane17 21 Apr '16

21 Apr '16

Hi Jim, I would love to take that equatorial scope off your hands, the on the opt corp pdf. Sent from my T-Mobile 4G LTE Device -------- Original message -------- From: James Harvey <wyominggeezer(a)gmail.com> Date: 04/21/2016 12:06 PM (GMT-07:00) To: utah-astronomy(a)mailman.xmission.com Subject: [Utah-astronomy] OFFER: Used Telescopes Greetings... I have not posted in some time. Due to issues related to my wife's health, I am "getting out of the business" of astronomy. I don't have much but will offer what I have to this group. OK, here is what I have: Item 1: http://www.amazon.com/MEADE-51501-Polaris-Refractor-Telescope/dp/B00004TDPP FREE, NO CHARGE Item 2: https://www.optcorp.com/pdf/OPT/EDU/4504.pdf FREE. NO CHARGE Item 3: http://www.celestron.com/browse-shop/uncategorized/firstscope-114eq-compact… $50 I have a box with quite a few eyepieces that fit these scopes. Free, no charge. If you are interested, give me a return email or call me at (801) 840-1770. Regards, Jim Harvey _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy(a)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".

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Electronics Store
by Joan Carman 16 Apr '16

16 Apr '16

A not so recent thread on some subject identified a local electronics store where you could get everything you could possible need. Who recalls the name of that store? I suspect many of you do, but please post the name and/or an address so I can see it. Thanks Joan

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Breaking News-- The Moon MAY have an Asteroid Orbiting it! - Preliminary Data Suggests Possible!
by BWF 16 Apr '16

16 Apr '16

Breaking News-- The Moon MAY have an Asteroid Orbiting it! - Preliminary Data Suggests Possible! Dear List, Breaking News-- The Moon MAY have an Asteroid Orbiting it! - Preliminary Data Suggests Possible! http://lunarmeteoritehunters.blogspot.jp/2016/04/breaking-news-moon-may-have -asteroid.html Dirk Ross...Tokyo The Latest Worldwide Meteor/Meteorite News http://lunarmeteoritehunters.blogspot.com/ ______________________________________________

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