Thanks Joe. Tyler -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Saturday, April 20, 2013 8:28 PM To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] New Image - NGC4631, the Whale and Pup Galaxies - Nocturne Observatory Plenty of detail, Tyler! ------------------------------ On Sat, Apr 20, 2013 2:01 PM MDT 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

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