Re: [APML] Advice, suggestions needed on new images

["Stuart Heggie" <stuart.j.heggie@sympatico.ca>]

Alan, I am not the strongest image processor. What I managed to do with the M45 that seemed to help
was to reduce the green by 20% (middle slider in PS Levels) and increase the blue by 10% (middle
slider in PS Levels). I also cropped it slightly as there is a lot of light falloff to the edges.
Seemed to improve the look.

The others I have no advice. You don't mention the large shadow in the upper left of the M81/82 -
do you know what caused that? Focus might be a bit soft on the M78 but not sure, maybe a minimum
filter on the stars in PS (select the stars, select -> modify -> expand the selection by a few
pixels then use filter -> other -> minimum).

Stuart
----- Original Message -----
From: "Alan Voetsch" <alanv12952@yahoo.com>
To: "APML" <astro-photo@seds.org>
Sent: Tuesday, December 21, 2004 10:47 PM
Subject: [APML] Advice, suggestions needed on new images


> Hey all,
>
> For the most part I am taking a hiatus from processing images until I
> can do a little more in PS. Still, I got 4 shots on Fuji Super HQ200
> last week. Other than a 105 minute M45 shot that doesn't show much,
> there are 'funny' things with each shot and that's what I would like
> comments on.
>
> First is a 185 minute image of M78 in Orion. Actually, with this one I
> would just like some suggestions on how to proceed. I scanned raw at
> 4000 dpi, did minimal levels and curves before making a copy and
> converting that to an 8 bit jpeg for your review. I love some of the
> CCD shots of this and want to do it justice, if I have enough data.
> Also, there is some weird 'diffraction pattern' in the lower right. Any
> suggestions on how to get rid of it?
>
> http://www.pbase.com/avoetsch12952/image/37754634
>
>
> On this 200 minute shot of M81-M82 and friend, the print and the scan
> both went strongly yellow. My exposure notes indicate that the shot was
> fogged out. Meaning: When my wife woke me up at 4:50 to end the
> exposure, a layer of fog or clouds had come in and the guidestar was
> lost. Still, it looks OK, other than the yellow. Question: is the
> yellow from the fog, or a film response problem? Can it be modified in
> PS so it looks presentable? Scanned at 4000 dpi, light levels and
> curves, converted a copy to an 8 bit jpeg.
>
> http://www.pbase.com/avoetsch12952/image/37755421
>
>
> And finally, another 200 minute shot of M45. Notes say that the 4-5 day
> old moon was up for at least part of this exposure. The color looks
> sort of weird. Can it be repaired, and how? Processing same as above,
> minimal.
>
> http://www.pbase.com/avoetsch12952/image/37756071
>
> Your help and advice are, as always, greatly appreciated.
>
> 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
>
>
>
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