Re: [APML] NGC 6992 uploaded

["Stuart Heggie" <Stuart.J.Heggie@sympatico.ca>]

Alan, first of all, that is a great shot! You should not be disappointed at
all! Now, some things that I think will help, but they are just suggestions:

First, the histograms in Red and Green are clipped which means you lost data
in the faint stuff. You'll either need to rescan if the raw files were
clipped or reprocess them from the point where you lost the left half of the
histograms.
Second, the background is too dark as was mentioned by Gary.
Third, averaging the two scans of each negative will reduce the noise so why
not ADD the two resultant images vs. median combine - this way you get the
benefit of twice as much signal.

Stuart
----- Original Message ----- 
From: "Alan Voetsch" <alanv12952@yahoo.com>
To: "APML" <astro-photo@seds.org>; "SOS" <oregonskywatchers@yahoogroups.com>
Sent: Monday, July 25, 2005 12:16 AM
Subject: [APML] NGC 6992 uploaded


> All,
>
> Hate to drop another dud on you guys, but I don't know where to go with
> this next. Believe it or not, I think the BG is too dark, especially
> now that I was able to run the Adobe gamma routine. With over 6 hours
> total exposure on 2 different films, I expected more. I suspect that
> I'll be staring over again (from scratch) on this one. Take a look and
> let me know of any advice or suggestions.
>
> http://www.pbase.com/image/34110658
>
> Thanks,
> Alan
>
> SCT Astrophotography: http://www.pbase.com/avoetsch/astrophotography
> FS-102 G-11/Gemini: http://www.pbase.com/avoetsch12952/tak_fs102
> & http://www.pbase.com/avoetsch12952/fs102
> & http://www.pbase.com/avoetsch12952/takpf
>
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