July 2009 - Utah-Astronomy - mailman.xmission.com

Re: [Utah-astronomy] Two new narrowband images - Crescent andDumbbell
by Debbie 02 Jul '09

02 Jul '09

Tyler, That is a nice camera you have. I know the Starlight cameras have very low dark noise. Is that what attracted you to the Starlight cameras? I looked at one on the Astrovid website and was impressed. I'm not getting into imaging right now but I think I might in a couple of years. I'm spending my money on my other hobbies right now but I'd like to do some wide-field piggyback astrophotography before I move into the prime focus. Do you image from your house? I think it would be move convenient to image at somebody's house than at a remote location. I love your website by the way. Debbie On Wed Jul 1 23:28 , 'Tyler Allred' <tylerallred(a)earthlink.net> sent: >Patrick said: > > > > > > > > > >Hi Patrick, >The nebulosity is absolutely real, but not captured in most images. I think >mine captures the OIII nebulosity really well, but I could go a lot deeper >in the Ha band, and I would love to add some SII into the mix. These were >all 10 minute sub exposures, but I may try some 20 minute subs on the next >clear night, just to see how deep I can go into the Ha wavelengths. > >Here are a couple of links to other images that managed to get the extended >portions of this object. > >Here is a nice image: >http://img98.imageshack.us/i/messier27dummbellnebulaox7.jpg/ > > >Gendler got some of the extended nebulosity, but mostly in the Ha band. He >didn't shoot OIII, which is where I got nearly all of my extended data. >http://www.robgendlerastropics.com/M27NM.html > > >Ian King got just a hint of the extended nebulosity: >http://www.iankingimaging.com/show_image.php\?id=170 > > >This one by Tony and Daphne Hallas is simply incredible (as usual), with RGB >and Ha data that captures the entire area beautifully: >http://www.astrophoto.com/M27.htm > > >This one from the IAC observatory does not have the extended stuff, but is >incredible at showing the lobes and ropes in the nebula. This is a >narrowband image from a professional observatory: >http://www.iac.es/telescopes/IAM/Sep08.html > > >As you pointed out, most of the images on the web fall far short of getting >the entire object. They just don't go deep enough. I think my careful >calibration and long exposures (10 minutes) allowed me to pull out some of >the extended portions that are rarely imaged, which makes me feel pretty >good! :) I love this "sport". > >Cheers, >Tyler >_____________________________________________ >-----Original Message----- >From: utah-astronomy-bounces(a)mailman.xmission.com >[utah-astronomy-bounces(a)mailman.xmission.com','','','')">utah-astronomy- bounces(a)mailman.xmission.com] On Behalf Of Patrick >Wiggins >Sent: Wednesday, July 01, 2009 9:43 PM >To: Utah Astronomy >Subject: Re: [Utah-astronomy] Two new narrowband images - Crescent >andDumbbell > >Excellent work, as usual, Tyler. Maybe just once you should post a >mediocre image to help some of the rest of us feel better about our >images. :) > >But seriously, when I first say your M27 it seemed to not look like >other shots of M27 I've seen. So I goggled "Dumbbell Nebula M27" and >looked at several images. None showed the nebulosity your picture >shows attached to the top and bottom of the nebula. > >Is that "extra" nebulosity real or an artifact of the imaging >technique you used? > >BTW, have you seen the work of U-A's newest member/astroimager, David >Rankin? > >Cheers, > >patrick > >On 01 Jul 2009, at 16:45 , Tyler Allred wrote: > >> Hi SLAS. >> >> I finally got my Starlight Xpress camera back from England and got a >> couple >> of nights to try it out. I decided to image a couple of old >> friends. the >> Dumbbell and the Crescent. I used Optec narrowband filters in >> Hydrogen >> Alpha (red) and Oxygen III (green and blue) wavelengths and combined >> them >> into color images. >> >> Here is a link to my latest images page. Click the top two images a >> few >> times for a full versions of these recent efforts. >> >> http://www.allred-astro.com/gpage8.html >> >> Let me know what you think. >> >> Cheers, >> >> Tyler > >_______________________________________________ >Utah-Astronomy mailing list >Utah-Astronomy(a)mailman.xmission.com >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Visit the Photo Gallery: http://www.slas.us/gallery2/main.php >Visit the Wiki: http://www.utahastronomy.com > > >_______________________________________________ >Utah-Astronomy mailing list >Utah-Astronomy(a)mailman.xmission.com >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Visit the Photo Gallery: http://www.slas.us/gallery2/main.php >Visit the Wiki: http://www.utahastronomy.com

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Two new narrowband images - Crescent and Dumbbell
by Tyler Allred 02 Jul '09

02 Jul '09

Hi SLAS. I finally got my Starlight Xpress camera back from England and got a couple of nights to try it out. I decided to image a couple of old friends. the Dumbbell and the Crescent. I used Optec narrowband filters in Hydrogen Alpha (red) and Oxygen III (green and blue) wavelengths and combined them into color images. Here is a link to my latest images page. Click the top two images a few times for a full versions of these recent efforts. http://www.allred-astro.com/gpage8.html Let me know what you think. Cheers, Tyler _____________________________________________

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Re: [Utah-astronomy] Two new narrowband images - Crescent and Dumbbell
by Joe Bauman 01 Jul '09

01 Jul '09

Those are beautiful and a little scary -- thanks for the great work. -- Joe --- On Wed, 7/1/09, Tyler Allred <tylerallred(a)earthlink.net> wrote: From: Tyler Allred <tylerallred(a)earthlink.net> Subject: [Utah-astronomy] Two new narrowband images - Crescent and Dumbbell To: utah-astronomy(a)mailman.xmission.com Date: Wednesday, July 1, 2009, 4:45 PM Hi SLAS. I finally got my Starlight Xpress camera back from England and got a couple of nights to try it out. I decided to image a couple of old friends. the Dumbbell and the Crescent. I used Optec narrowband filters in Hydrogen Alpha (red) and Oxygen III (green and blue) wavelengths and combined them into color images. Here is a link to my latest images page. Click the top two images a few times for a full versions of these recent efforts. http://www.allred-astro.com/gpage8.html Let me know what you think. Cheers, Tyler _____________________________________________ _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Free to good home
by Patrick Wiggins 01 Jul '09

01 Jul '09

Several years ago I was given a military surplus tripod. Being military the thing is built like a tank, is VERY heavy and equally sturdy. The 30cm top rotates via internal gearing. The bottom of each leg rest on a heavy metal disk about 20cm in diameter. The center shaft, which appears to be solid, is about 90mm in diameter. When set up ("deployed" might be a better term for this beast) it stands about waist high. I've never been able to find a use for it so I've decided to just give it away. Any interest? patrick

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Close Encountes of the Badge Kind
by Joe Bauman 01 Jul '09

01 Jul '09

Ever met up with officers while out observing? Ever wish you had? Here's your chance to comment: http://www.deseretnews.com/blogs/1,5322,10000034,00.html Best wishes, Joe

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LCROSS near Izar 8_15UT 7_2 tonight
by Canopus56 01 Jul '09

01 Jul '09

Tonight, the LCROSS satellite will pass about 2 degs, PA225 from Izar (eps Boo) and 1 deg, PA250 from 36 Boo (for my o.p. at W110 N41) at around 8:15UT, July 2, 2009. Because there are no USPCMD two-line elements,topocentric plots can be generated using the NASA JPL Horizons emphermis generator. http://ssd.jpl.nasa.gov/horizons.cgi Two successful imagers have captured the satellite at its current distance as a 16mag object using 16 inches of aperture and both CCD and DSLR cameras at 30 to 60 secs of exposure. See chart at: http://members.csolutions.net/fisherka/astronote/observed/LCROSS/CruiseFind… in http://canopus56.wikispaces.com/LCROSS_Cruise_Orbit for detailed local circumstances for W110 N42. For pacific coast and intermountain CONUS observers, given the rising Moon time and increasing lunar skywashout, this probably represents one of the last opportunities to image LCROSS during orbit 1. Clear skies - Kurt

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