Re: [APML] My most recent M101 processed by Bradley Hope

[Alan Voetsch <alanv12952@yahoo.com>]

 I corrected the first link.

Alan

--- Alan Voetsch <alanv12952@yahoo.com> wrote:
> Hey all,
> 
> 2-3 of you have worked on this. Bradley asked for the full size file
> and got it, after he talked me through the process. This experiment
> has
> shown that I am completely incompetant at processing. I also sent him
> another full size file of shot currently uploaded as it has pretty
> much
> the same camera orientation. It is here:
> 
> http://www.pbase.com/avoetsch12952/image/39939095
> 
> On the recent shot, I kept getting odd BG colors while M101 itself
> ended up either green, or blue. Maybe Aquamarine. 8-)
> 
> The exposures were 225 and 210 minutes on Fuji SHQ200, and his
> processing comments are intact, with the link to his effort at the
> bottom. 
> 
> John Laborde also had similar results working with a 1.5mb jpeg file.
> 
> If I get some time in the next few days, maybe I'll give it another
> try
> to see if I can get close to their results.
> 
> Alan
> 
> > This is about the best I can do with it. I tried a half dozen
> > different ways
> > of getting there and kept going down blind alleys...so I went back
> > and did
> > it the same way I did the original jpg you sent me, with a couple
> > variations
> > along the way.
> > 
> > DBE in PI using both DIV and SUB to get two slightly different
> > images.
> > 
> > Minor HIST in PI. Didn't try and do a perfect match in each
> channel,
> > just
> > clipped to start of curve and clipped at end of curve in each
> > channel.
> > 
> > For both images from PI, +10 Contrast in PS..then Levels. Tried to
> > get as
> > close a balance as possible without clipping anything. Slight
> > adjustment in
> > Curves, pinning the curve at multiple points, then adjusting to try
> > and
> > bring up the outer edges of M101 without fracking up the rest of
> it.
> > 
> > Registered both images in RegiStar then did an Average Combine.
> > 
> > Checked levels in PS and adjusted slightly.
> > 
> > Using Magic Wand at about 80% pulled M101 and copied it. Then did a
> > Guassian
> > Blur at .5 pixel - 100%...then pasted the copy of M101 back into
> the
> > image
> > 
> > Now I start cheating.
> > Wasn't able to quite get the right color balance in PS...so I went
> to
> > Paint
> > Shop Pro and adjusted the color balance slightly to finish getting
> > rid of
> > the remaining yellowish tinge and add just a touch of blue.
> > 
> > Still wasn't getting enough smoothing to suit me so I went into
> > Images Plus
> > and ran Multi-resolution Smooth/Sharpen and hit it with an
> extra-fine
> > smooth
> > at 40%, fine smooth at 10%, and an extra-large smooth at 20%.
> > 
> > Final contrast and brightness adjust in Paint Shop Pro cause it
> most
> > closely
> > duplicates what I see with IE.
> > 
> > After almost 5 hours of playing with it...4 or 5 false starts and
> > starting
> > over again...this is what I ended up with. Sorry I can't do any
> > better with
> > it.
> > 
> > http://astronomy.thorngarden.net/alan/M101-final.jpg



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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