June 2017 - Utah-Astronomy - mailman.xmission.com

Re: [Utah-astronomy] Last night's lecture
by Joe Bauman 12 Dec '18

12 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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Quick photo of comet C/2015 V2 Johnson
by Dave Gary 28 Jun '17

28 Jun '17

Took a quick photo of comet C/2015 V2 Johnson last night. There’s still the hint of a tail…I think. The bright star to the right is Spica. Dave https://www.flickr.com/photos/78046474@N06/34780446603/

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The glorious Lagoon Nebula
by Joe Bauman 28 Jun '17

28 Jun '17

Dear fellow astro-fans, you might be interested in my latest blog, about the beautiful Lagoon Nebula. http://the-nightly-news.com/blog/blog-20-the-magnificent-lagoon-nebula If you wish, you can subscribe to the blog on the home page, http://the-nightly-news.com/ Thanks for taking a look! -- Joe

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Coronal hole today
by Chuck Hards 15 Jun '17

15 Jun '17

It does appear that we witnessed an event associated with the coronal hole. See the report at http://spaceweather.com/ We saw a bright patch appear and disappear in the middle of a dark spot, next to a white semi-circular patch. It did this several times during the hour we watched. Observing in fairly good seeing conditions with the PST. Shoshana, it was my pleasure to observe the sun today with you and Mark!

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Fwd: Content filtered message notification
by Chuck Hards 15 Jun '17

15 Jun '17

For some reason the list server bounced this message, so I'm re sending it. ---------- Forwarded message ---------- From: Shoshana E <ebertzs(a)comcast.net> To: utah-astronomy(a)mailman.xmission.com Cc: Bcc: Date: Wed, 14 Jun 2017 17:48:05 -0600 Subject: Re: Utah-Astronomy Digest, Vol 172, Issue 11 WOW Chuck brought his solar scope to Mark's work this afternoon and I joined.We saw the coronal hole!!!! Awesome now I want a solar scope with Halpha! Space weather says The solar wind should reach us by the 16th Best Shoshana

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The Sun June 13
by Chuck Hards 13 Jun '17

13 Jun '17

That little sunspot group I've been tracking is still there, but just about to disappear behind the Sun's western limb. Using a Lunt Hershel wedge in white light, I can see some bright patches associated with it. It's the only sunspot group on the solar disk at present. On the eastern limb, at about the same solar latitude as the sunspots, is a group of at least four bright patches that may be an indicator of another sunspot group about to rotate into view. These bright patches are not as easily seen using Baader film. The resolution and contrast with the wedge is better.

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Re: [Utah-astronomy] Howie Glatter passes
by chuck.hards 13 Jun '17

13 Jun '17

I think he was only 63. Cancer. Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Siegfried Jachmann <siegfried(a)jachmann.org> Date: 6/12/17 9:15 PM (GMT-07:00) To: Utah Astronomy <utah-astronomy(a)mailman.xmission.com> Subject: Re: [Utah-astronomy] Howie Flatter passes That's too bad. He made great products. Do you know how old he was. On Jun 12, 2017 9:12 PM, "chuck.hards" <chuck.hards(a)gmail.com> wrote: > > I learned tonight that Howie Glatter has died. > Ad Astra, Howie. > > > > Sent from my Verizon, Samsung Galaxy 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". _______________________________________________ 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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Howie Flatter passes
by chuck.hards 13 Jun '17

13 Jun '17

I learned tonight that Howie Glatter has died. Ad Astra, Howie. Sent from my Verizon, Samsung Galaxy smartphone

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Re: [Utah-astronomy] Howie Flatter passes
by chuck.hards 13 Jun '17

13 Jun '17

I HATE auto-correct! Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: "chuck.hards" <chuck.hards(a)gmail.com> Date: 6/12/17 9:12 PM (GMT-07:00) To: Utah Astronomy <utah-astronomy(a)mailman.xmission.com> Subject: Howie Flatter passes I learned tonight that Howie Glatter has died. Ad Astra, Howie. Sent from my Verizon, Samsung Galaxy smartphone

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Re: [Utah-astronomy] Utah-Astronomy Digest, Vol 172, Issue 4
by Siegfried Jachmann 10 Jun '17

10 Jun '17

With a small Newtonian it would be perfectly safe to project an image through the eyepiece to a piece of shaded white paper. You however should use only cheaper non-cemented eyepieces. If your reflector is bigger than 6", be sure to stop it down. You don't want to cook an eyepiece. Always exercise extreme caution with the Sun. The Sun does not forgive stupidity or carelessness. Eyes do not react well to sunlight concentrated through a telescope. Matt and Chuck are exactly right in their advice. On Jun 8, 2017 6:45 PM, "Joe Bauman via Utah-Astronomy" < utah-astronomy(a)mailman.xmission.com> wrote: I would not use a Dob as a solar scope! Too dangerous! Sent from my iPhone > On Jun 8, 2017, at 5:06 PM, Sue Ellen Ebertz <ebertzs(a)comcast.net> wrote: > > Yes, Joe, and much appreciated. I misspoke. I meant to be addressing 'Sun > Parties' as there are many opportunities for weeknight sky viewing. > > Maybe I can fit a telrad filter and an eyepiece filter into a borrowed Dob? > > Is this possible and if not, maybe not the right way to go about viewing the > sun in a Dob due to its major light collecting bucket function! > > Thanks, Shoshana > > > > > _______________________________________________ > 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". _______________________________________________ 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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