Hi Tyler, Like you said, there's lots of detail. I see lots of color in the foreground stars. Is that real or added? patrick On 20 Apr 2013, at 14:01, Tyler Allred wrote:

Hello All,

I spent the nights of March 17th and 18th working on a single image of NGC4631, with my new 12.5" Zambuto homemade astrograph, dubbed the "Supernova Astrograph".

Here is a link to the image on my website.

http://www.allred-astro.com//viewer.php?id=119 <http://www.allred-astro.com/viewer.php?id=119&cat=1&sub=23> &cat=1&sub=23

If you click the image a couple of times you can get to the full version. It is worth taking a few minutes to peruse because there is lots of detail in the main galaxy and there are tons of small galaxies scattered throughout the image.

This composite LRGB image is composed of

. 24 luminance exposures, of 10 minutes each, unbinned

. 18 red exposures, of 5 minutes each, binned 2x2

. 18 green exposures, of 5 minutes each, binned 2x2

. 18 blue exposures, of 5 minutes each, binned 2x2

I might try to add some hydrogen alpha data to the image, but perhaps it would be a waste of time, since the plain RGB image picked up the magenta star-forming regions quite well.

I hope you enjoy the image.

Cheers,

Tyler

That is very cool. Thanks for posting the composition data. Now, I have an idea of how to compose some of my sessions. However, with my limited aperture the exposure times would be much longer for some deep-sky objects. Great work as always. Dave On Apr 20, 2013, at 2:01 PM, Tyler Allred <tyler@allred-astro.com> wrote:

Hello All,

I spent the nights of March 17th and 18th working on a single image of NGC4631, with my new 12.5" Zambuto homemade astrograph, dubbed the "Supernova Astrograph".

Here is a link to the image on my website.

http://www.allred-astro.com//viewer.php?id=119 <http://www.allred-astro.com/viewer.php?id=119&cat=1&sub=23> &cat=1&sub=23

If you click the image a couple of times you can get to the full version. It is worth taking a few minutes to peruse because there is lots of detail in the main galaxy and there are tons of small galaxies scattered throughout the image.

This composite LRGB image is composed of

. 24 luminance exposures, of 10 minutes each, unbinned

. 18 red exposures, of 5 minutes each, binned 2x2

. 18 green exposures, of 5 minutes each, binned 2x2

. 18 blue exposures, of 5 minutes each, binned 2x2

I might try to add some hydrogen alpha data to the image, but perhaps it would be a waste of time, since the plain RGB image picked up the magenta star-forming regions quite well.

I hope you enjoy the image.

Cheers,

Tyler

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WOW,  We have been treated to some fantastic astrophotography in the last few days. Tyler you image is out of this world. And then the Hubble horse head. Every time I think about doing some or starting astrophotography I am totally amazed........... They are just fantastic. Tyler you can see what that whale had for lunch.  Mark  ________________________________ From: Tyler Allred <tyler@allred-astro.com> To: utah-astronomy@mailman.xmission.com Sent: Saturday, April 20, 2013 2:01 PM Subject: [Utah-astronomy] New Image - NGC4631, the Whale and Pup Galaxies - Nocturne Observatory Hello All, I spent the nights of March 17th and 18th working on a single image of NGC4631, with my new 12.5" Zambuto homemade astrograph, dubbed the "Supernova Astrograph".  Here is a link to the image on my website. http://www.allred-astro.com//viewer.php?id=119 <http://www.allred-astro.com/viewer.php?id=119&cat=1&sub=23> &cat=1&sub=23 If you click the image a couple of times you can get to the full version. It is worth taking a few minutes to peruse because there is lots of detail in the main galaxy and there are tons of small galaxies scattered throughout the image. This composite LRGB image is composed of .        24 luminance exposures, of 10 minutes each, unbinned .        18 red exposures, of 5 minutes each, binned 2x2 .        18 green exposures, of 5 minutes each, binned 2x2 .        18 blue exposures, of 5 minutes each, binned 2x2 I might try to add some hydrogen alpha data to the image, but perhaps it would be a waste of time, since the plain RGB image picked up the magenta star-forming regions quite well. I hope you enjoy the image. Cheers, Tyler _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@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".