Re: [APML] New NGC 7331

["Walter Willis" <wwillis1@qwest.net>]

Gorgeous image.  So many galaxies. :)

 

Walter Willis
Life without chocolate is too terrible to contemplate

 

 

----- Original Message -----

From: Tony Hallas

To: Discussion of Film Astrophotography

Sent: Monday, August 11, 2003 11:27 AM

Subject: Re: [APML] New NGC 7331

Hello,

 

    After very careful processing here is the "real" version of NGC 7331 ... the only reason that I am posting this on the APML is because ALL the post reduction processing was done in PS. I discovered with very careful processing that "detail" can very easily be created by sloppy processing ( my only excuse is that I did say the first one was "quick and dirty" ).

 

    I paid huge attention this time to S/N, artifacts that occur when stretching an image (bands and rings that really aren't there ... these occur at the boundary of a selection), and density / contrast parameters...

 

    Soooo ... this is about as clean as I can get it ... hope you like it.

 

   http://www.astrophoto.com/ngc7331CCD.htm

 

   I know this is a film list but most of what went into this image was done using film techniques in PS ... and you don't have to open the image if you don't want to...

 

    Have a good one,

 

        Tony

---

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