From: Milton Aupperle <milton@outcastsoft.com>

Date: October 31, 2007 12:44:46 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: Comet Holmes Oct 30 from Toronto

Well maybe I'll just give up on stacking then.

On 31-Oct-07, at 12:38 PM, jimchung2338 wrote:

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.

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

Milton J. Aupperle

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