From: "jimchung2338" <jim_chung@sunshine.net>

Date: October 31, 2007 12:38:30 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: Comet Holmes Oct 30 from Toronto

Hi Alan,

First off, a colleague was kind enough to remind me that I should have stacked the images on 

the nucleus and not the star field which is why I'm getting all these interesting colors.

http://tech.groups.yahoo.com/group/Astro_IIDC/files/Planetary/Holmes_FleaRGBrestack.jpg

It didn't really clear until after 11 PM last night so the object was near the zenith and my 

polar alignment wasn't good enough to image more than 5 seconds at a time.   

I've been using Nebulosity (sorry Milton) to proces subs and it performs a combination of 

straight summation and averaging during the stack such that oversaturation of a pixel will 

not occur.  

Jim