August 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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22-Inch Dob for sale
by Chuck Hards 01 Sep '16

01 Sep '16

I am selling Brent's old 22-inch (f/6-ish) Dob for the giveaway price of $200. This is a huge, classic Dob, you will need a flatbed trailer to take it home. Mirror made by Brent Watson under the personal supervision of John Dobson. Comes with a free ten-foot stepladder. I've been keeping it under an RV tarp on my patio with the mirrors removed. Comes with wheeled dolly made by either Brent or Wayne Sumner. You'll never get another chance at a scope this huge for such little money. I'd like to move it on in the next few days, while I'm off work (a rarity these days). Thanks!

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Coulter Odyssey 13.1-inch Dob For Sale
by Chuck Hards 31 Aug '16

31 Aug '16

I have listed my Coulter 13.1" Odyssey Dob for sale on KSL Classifeds: https://www.ksl.com/?nid=218&ad=41283390 The perfect large-aperture scope for the serious visual observer, or casual sky-gazer. Includes a custom-made wheeled dolly to allow the telescope to be rolled-about on paved surfaces, for ease of setup and use. First come, first served. They haven't made these in decades. Optics are pristine.

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Seasons
by Chuck Hards 20 Aug '16

20 Aug '16

This morning I watched Sirius rise above the Wasatch in morning twilight, for the first time this year. Winter isn't too far behind!

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M27 08092016 | M27 taken in high-wind conditions.
by Dave Gary 11 Aug '16

11 Aug '16

M27 taken in high-wind conditions. Got this one shot before I decided to break down the setup and call it a night. I was tired of fighting the wind. This was the best shot I could muster for the evening. > https://www.flickr.com/photos/78046474@N06/28862045716/in/dateposted-public/ <https://www.flickr.com/photos/78046474@N06/28862045716/in/dateposted-public/>

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Perseids
by Richard Tenney 10 Aug '16

10 Aug '16

I woke up unexpectedly just before 5 a.m. this morning, and after going downstairs to get some water, glanced outside and saw clear sky, so I wandered into the back yard and enjoyed the view for several minutes. Perseus was high overhead, Orion mostly clearing the mountaintops, Capella gleaming brightly in the NE. It's amazing how... comforting it is in the calm of early morning to just throw your head back, look up and forget life's cares for a few minutes. I even managed to see a couple of faint Perseids as an added bonus. Sometimes it's just enough (and then some) to just get out and look up and enjoy. /Rich

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Fwd: PlaneWave Newsletter - PW1000 Open House Event
by Larry Holmes 09 Aug '16

09 Aug '16

FYI.... PlaneWave Newsletter - PW1000 Open House Event Invitation to PlaneWave PW1000 Open House release event. View this email in your browser <http://us1.campaign-archive1.com/?u=eeeed48260648f75025a73cfb&id=265e321b33…> <http://planewave.us1.list-manage1.com/track/click?u=eeeed48260648f75025a73c…> Clear Skies Newletter Special Edition - August 2016 OPEN HOUSE You are invited ! Join us as we celebrate the first production release of our revolutionary telescope the 1 Meter Observatory Grade PW1000. August 25th 10 AM - 4PM 1819 Kona Drive - Rancho Dominguez, CA 310.639.1662 See this telescope - Complete factory tour - Meet PlaneWave engineers The PW1000 telescope features light-weighted optics that are made of zero expansion fused silica materials for excellent thermal stability and maximum throughput. With a diffraction-limited 100mm image circle, the PW1000 is designed to excel at imaging on the largest format CCD cameras available today. Available with Corrected Dall-Kirkham (CDK) or Ritchey-Chrétien (RC) optics. The PW1000 is Ideal for Arrays and SSA The telescope is *Off The Shelf *product – meaning it is not custom and has much more affordable pricing. The telescope has *Short lead times* – 6 to 9 months for a single order and for multiple orders, 6-9 months for the first telescope and 3 months for each after that. The PW1000 is *Supported product* – PlaneWave is in continuous production and therefor parts are readily available, customer support is available and software development is continually being upgraded. The PW1000 is *Easy to install* – the telescope weighs about 3000 lbs (1360 kg) and it only takes one day to install and can be fully operational the same day. Unique Dual Nasmyth Design The dual Nasmyth ports allow two instruments to be installed simultaneously, and a computer-controlled M3 mirror allows either instrument to be remotely selected in seconds. With direct drive motors, high resolution encoders, zero backlash and no periodic error, the PW1000 sets a new standard in 1-meter class observatory telescopes. Join Us On August 25th Experience our biggest release! . RSVP Now <http://planewave.us1.list-manage.com/track/click?u=eeeed48260648f75025a73cf…> . <http://planewave.us1.list-manage.com/track/click?u=eeeed48260648f75025a73cf…> <http://planewave.us1.list-manage.com/track/click?u=eeeed48260648f75025a73cf…> <http://planewave.us1.list-manage2.com/track/click?u=eeeed48260648f75025a73c…> /Copyright © 2016 PlaneWave Instruments, Inc. All rights reserved./ *Our mailing address is:* editor(a)planewave.com Want to change how you receive these emails? You can update your preferences <http://planewave.us1.list-manage.com/profile?u=eeeed48260648f75025a73cfb&id…> or unsubscribe from this list <http://planewave.us1.list-manage.com/unsubscribe?u=eeeed48260648f75025a73cf…> This email was sent to larry(a)kijoda.com <mailto:larry@kijoda.com> /why did I get this?/ <http://planewave.us1.list-manage.com/about?u=eeeed48260648f75025a73cfb&id=4…> unsubscribe from this list <http://planewave.us1.list-manage.com/unsubscribe?u=eeeed48260648f75025a73cf…> update subscription preferences <http://planewave.us1.list-manage.com/profile?u=eeeed48260648f75025a73cfb&id…> PlaneWave Instruments, Inc. · 1819 Kona Drive · Compton, CA 90220 · USA Email Marketing Powered by MailChimp <http://www.mailchimp.com/monkey-rewards/?utm_source=freemium_newsletter&utm…>

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Star Party in A.F. Canyon tomorrow (Friday)
by Richard Tenney 08 Aug '16

08 Aug '16

The new Utah Valley Astronomy Club (UVAC) is helping the rangers at Timp Cave National Monument and the U.S. Forest Service to host a star party in American Fork Canyon Friday (5th) evening. Attendees coming up just for the event are not required to pay entrance fees (unless you plan to camp). We'll be setting up (staring around 19:30) in the Pine Hollow Trail Head parking lot, located 2 hairpin turns past Mutual Dell in A. F. Canyon. If any list members want to participate, you are more than welcome! Forecast is partly cloudy, but we'll be there regardless. Hope to see some of you there! /Rich

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First come-first serve
by Thomas Sevcik 06 Aug '16

06 Aug '16

Greetings fellow SLASers, If you've been looking for a good deal, now is the time to check out our clearance of a number of eyepieces here at the Clark Planetarium. We have; (3) Orion Expanse Wide-Field 20mm, 1-1/4-in at 35% off. Was priced at $72.95, now $47.42! Also, (1) 15mm at the same price of $47.42. (1) Orion Long Eye Relief 18mm, 1-1/4-in at 50% off. Was priced at $99.95, now $49.98. Also, (1) 20mm at 50% off for the same price of $49.98. (2) Orion Edge-On Flat Field 27mm, 1-1/4-in at 50% off. Was priced at $104.95, now $52.48. (2) Orion Epic II 25mm, 1-1/4-in at 50 % off. Was priced at $99.95, now $49.98. (1) Orion Stratus 68 degree, 1-1/4-in, at 50% off. Was priced at $134.95. Now $67.48. Just marked-down today, and it's first-come, first-served. Celestron's new Astro-Fi should be arriving here around the middle of the month. Tom Sevcik

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The culprit
by Joe Bauman 03 Aug '16

03 Aug '16

It turns out that the censor was none other than out illustrious president, Joan Carman. Obviously she cannot abide any dissent or open discussion. To think that an officer of SLAS would stoop to silencing a dues-paying member of the club is appalling. She claims she sent me a note that she had kicked me out of SLAS Talk when it happened months ago but I never saw such a note. I am astonished at this abuse of power and will file a complaint with Facebook. Meanwhile, of course, I am unfriending her for this must unfriendly, nasty and uncalled-for action. -- the astonished Joe Bauman Sent from my iPhone

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