Tyler, It surprised me as well. It really gave me some leeway to sharpen the image up and bring out more detail. I'll probably be trying it out on some of my other galaxy shots. Cheers David On 3/5/2010 2:15 PM, Tyler Allred wrote:
David, That drizzle methods worked well. The larger image still looks great. Cheers, Tyler
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of David Rankin Sent: Friday, March 05, 2010 11:39 AM To: Utah Astronomy Subject: [Utah-astronomy] M51, Drizzle stack
Cold of winter, haven't been able to image for a while, so I've been working on processing techniques. I decided to play around with the "Drizzle" function in Deep Sky Stacker. It is really good at enlarging and increasing the resolution of a stack of images, and was developed by Nasa for use with Hubble Deep Field work. You can read about the feature here:
http://deepskystacker.free.fr/english/technical.htm#Drizzle
So I did a 2x drizzle on the M51 stack to see what sort of detail I could pull out of it and how big I could get it. Here is the result so far:
http://www.slas.us/gallery2/main.php?g2_itemId=3017&g2_imageViewsIndex=1
After the stack was finished, I used some of the techniques talked about by Ken Crawford in the "Depth of Field Processing" tutorial here to sharpen the details in the galaxy up a bit using photoshop.
http://www.imagingdeepsky.com/Presentations.html
Cheers,
David Rankin
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