August 2018 - 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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Astronomy Humor
by Grammy Terry 30 Aug '18

30 Aug '18

I ask Google to open the pod door please, Hal. She answered, “I can’t do that but there’s a spare key under the flower pot outside the pod bay airlock. You can let yourself in.” Posted sci-fi humor on FB. If Alexa were Hal. https://m.facebook.com/ScreenJunkies/videos/10155953204437403/ Kathy

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Time for Astronomical humor
by Jamie Bradley 30 Aug '18

30 Aug '18

Orion's belt is a big waist of space. Treible joke, only three stars... Jamie B

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Large binocular for sale
by Chuck Hards 30 Aug '18

30 Aug '18

I am selling my Resolux 15x70mm binocular. This is a high-quality, metal-cased binocular made especially for astronomy. Much more rugged than the ubiquitous 15x70mm plastic body binos flooding the market, that lose collimation if bumped. Very lightly used, I've only had it out a few times. Essentially brand new. Comes with the factory hard storage case. These sell new for $379.99, I will let this one go for $320.00 if picked up and paid for in cash, and will include a pair of custom made Baader solar filters for the objectives. Shipping charges will apply if you need it mailed out. See details here: https://www.telescope.com/Orion/Binoculars/Astronomy-Binoculars/Orion-Resol… Thanks for looking!

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SIEGFRIED REDUX?
by kharrismar 29 Aug '18

29 Aug '18

Did anybody but me see the picture at the bottom of page 39 of the Oct Sky & Telescope? The guy on the right end looks a lot like Siegfried! Did he move to Australia before or after his funeral? Sent from my Galaxy Tab®

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Re: [Utah-astronomy] Pentax J60-C for sale
by kharrismar 28 Aug '18

28 Aug '18

Sorry to barge in on your email, but I'm not sure how to email utah astronomy. But I just got my oct issue of Sky & Telescope, and I thought I saw the resurrected body of Siegfried in the photo at the bottom of page 39, on the right end of the group. Could it be that he fooled us, again?Ķen Harris Sent from my Galaxy Tab® S2 -------- Original message --------From: Chuck Hards <chuck.hards(a)gmail.com> Date: 8/27/18 11:48 AM (GMT-07:00) To: Utah Astronomy <utah-astronomy(a)mailman.xmission.com> Subject: Re: [Utah-astronomy] Pentax J60-C for sale The Pentax J60-C has been *sold*. Thanks to everyone who enquired! On Mon, Aug 27, 2018 at 9:06 AM Chuck Hards <chuck.hards(a)gmail.com> wrote: > I have a gently-used Pentax J60C for sale. > > > _______________________________________________ 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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Pentax J60-C for sale
by Chuck Hards 27 Aug '18

27 Aug '18

I have a gently-used Pentax J60C for sale. It is a compact 60mm refractor kit, complete with table-top mount/tripod, set of 3 Pentax eyepieces, Barlow, extension tubes, diagonal, beautiful finder. Comes in the factory vinyl storage/transport case as well as the original cardboard retail box, and Pentax branded corrugated shipping box. I'm including a 1.25" visual back at no extra cost. Price is $140 shipped or pick it up for a hundred dollar bill. A great little grab-n-go scope with legendary Pentax optics. Throw it in the car or your luggage when a larger scope won't fit. And you won't be sweating blood if the airline loses your telescope. Shoot me an email if interested, I have it listed on Cloudy Nights but would obviously rather sell it locally and not have to ship. Can email photos if interested. Thanks! Chuck PS, selling a lot more astro gear this fall to help offset medical expenses not covered by insurance. Stay tuned.

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West Nile virus
by Joe Bauman 23 Aug '18

23 Aug '18

You must admit the absurdity of acting as if inviting the public to a known disease vector for West Nile virus is a life-saving effort. I have no doubt that most infected pools in Salt Lake County are things like junkyards with old tires that have accumulated water, not large lakes where the public visits to gaze at stars. Sent from Yahoo Mail for iPhone

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West Nile Virus
by Thomas Sevcik 23 Aug '18

23 Aug '18

I have to agree with Joe that public safety is our priority. However, I wonder if we couldn’t post a sign saying “West Nile Virus detected-please use repellent,” at the entrance to SPOC? Also, is it possible to have the grounds keeper use a spray a couple hours ahead before the public begins arriving? Just a thought. sent from my iPhone

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Fw: West Nile Virus confirmed at Stansbury
by Joe Bauman 21 Aug '18

21 Aug '18

Sent from Yahoo Mail for iPhone Begin forwarded message: On Tuesday, August 21, 2018, 4:33 PM, Joe Bauman <josephmbauman(a)yahoo.com> wrote: I call upon the SLAS Board to immediately cancel all events at SPOC. Not doing so is the height of arrogance and will place members of the public in danger of illness or death and expose the club to liability.— Joe Bauman, who resigned as SLAS vice president because of board members’ arrogance Sent from Yahoo Mail for iPhone Begin forwarded message: On Tuesday, August 21, 2018, 5:54 AM, Chuck Hards <chuck.hards(a)gmail.com> wrote: Well, this little news item is surely disturbing: http://www.ksl.com/?sid=46378833&nid=148&title=mosquitos-in-stansbury-park-… Be sure to liberally apply a 100% DEET solution if you head out to any star parties at SPOC, until the first killing frost of the season. I've tried the Boy Scout trick of rubbing my skin with a dryer sheet, it's fairly effective but not 100%. _______________________________________________ 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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