Re: [APML] Processing of M42 (STL11000M)

["Volker" <volker@spiegelteam.de>]

Very interesting Rob, thanks for sharing! Your way to sum parts of the image
gives me new ideas for noisy and faint stuff, I will try that next time.

Volker
www.spiegelteam.de


----- Original Message ----- 
From: "Robert Gendler" <robgendler@worldnet.att.net>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Tuesday, December 23, 2003 4:06 PM
Subject: [APML] Processing of M42 (STL11000M)


> The following is a summary of my processing which I hope will be
> useful to anyone using digital processing techniques.
>
> 1) I stacked all the 5 minute subexposures twice, once using
> sum combine for the outer fainter stuff (core blown out) and
> again using median combine for the inner detail.
> 2) 2 RGB composites were done, one using sum combine images
> and one using median combined images.
> 3) These two RGB's were layered in PS 6.0
> 4) Extensive correction of light pollution gradients was done
> in PS by hand using the lasso and curves/levels
> 5) I then created a luminance using "all" the frames (R,G,B)
> which was then processed fully in 16 bit before 8 bit conversion.
> 6) Multiple rounds of luminance layering were then done in PS
> using the techniques described on my web site below.
> http://www.robgendlerastropics.com/LLRGB.html
> http://www.robgendlerastropics.com/LRGB.html
> 7) With each round of luminance layering I applied a minimum
> filter only to the stars in the luminance layer to preserve star colors
> in the color layer.
> 8) Final touches (saturation, leveling, curves) done in PS.
>
>
> Rob Gendler
> Email: robgendler@att.net
> Web site: http://www.robgendlerastropics.com/
> ----- Original Message ----- 
> From: "Bobby Middleton" <bobm@koyote.com>
> To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
> Sent: Tuesday, December 23, 2003 6:09 AM
> Subject: Re: [APML] OT: New M42 (STL11000M)
>
>
> > > > Dr.  M. Stecker says that one
> > > > angiogram should help you pay for one of these!
> >
> > <vbg>
> > Bobby Middleton
> > _______________________________________________
> > Astro-Photo mailing list
> > Astro-Photo@seds.org
> > http://seds.org/mailman/listinfo/astro-photo
>
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