Re: [APML] OT (slightly) M82 Reds

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

Chris - WOW! I've never seen reds like those in M82.

Stuart
http://www3.sympatico.ca/stuart.j.heggie/Stuart.J.Heggie/
Flesherton, Ontario, Canada

----- Original Message -----
From: "Chris Schur" <cschur@therim.com>
To: "APML" <Astro-Photo@seds.org>
Sent: Sunday, March 21, 2004 5:58 PM
Subject: [APML] OT (slightly) M82 Reds


> Hi all,
>
> I used a technique I developed for film imaging when combining red
filtered
> tech pan images with color supra 400 shots for this CCD image.  I
wanted to
> share with you the result so you can try it too on your film shots.
The
> method combines a deep Ha or red filtered shot with a white light
color
> image.  Rather than just add them and combine using the LAB method,
(Ala
> Gendler), I first adjust both images in PS to be same background
density,
> and a good appearance for to be a decent shot on its own.  Then I
paste one
> over the other (after registering!).  I combine the layers with
lighten.
> What happens is really cool - the white light image has the bright
stars,
> blue nebs and stellar core.  The Ha shot has the bright Ha regions and
a
> host of IR stars.  Combining with Lighten does this:  the brightest of
both
> shots becomes the final image.  So in that final image, you get it
all - a
> great white light color image with enhanced Ha nebs and lots of neat
IR
> stars all over.  Here's a (gulp) CCD shot using this exact technique.
I
> hope you can use it on your film shots!
>
> http://www.psiaz.com/schur/astro/ccdimagepages/m82-2.html
>
>
> Take Care,
>
> Chris Schur
>
>
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