M39 in Cygnus


Scope: Megrez II  f/4.1; Location: Dos Picos Park, Ramona, 2 Oct. 2004; and Del Mar CA;  4 Oct. 2004; Camera: ToUcam SC3

Exposure: 15 x 20 sec  and 15 x 6 sec Luminance exposures with Baader IR Block Filter; 12 x 16 sec RGB 

Processing: All exposures captured  in K3CCDTools. Alignment and stacking was done with Registax and saved as FITs. LRGB channels were co-registered in Astroart. Luminance and Color channels were scaled and rough color balanced in Astroart.  The shorter Luminance exposure was combined with the longer one to reduce star bloat in the Luminance construction. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Color balancing and final touches were done in Photoshop. SGBNR (PixInsight LE) was used to smooth background noise on the luminance channel. Resized to approximately 800x600.

This image was an unguided exposure. After the Luminance exposures the first night, clouds came in - the color exposures were made the second evening. This is one of two Messier open clusters in Cygnus (along with M29).  Horizontal FOV is about 50'.


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All images and content remain the property of Jim Thommes - copyright 2003, 2006

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