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M39 and NGC 7067 in Cygnus



Scope: Zenithstar 66 mm APO at  f/4.7 Location: Laguna Mountains, CA   13 June 2010  Camera: Artemis285

Exposure: 12 x 3 min  Luminance with IR Block Filter (bin 1x1); 8 x 1.5 min RGB (2x2 bin)

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked and dark subtracted in Astroart with Sigma Combine.   IR / UV Blocking  filter  and Color channels were scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.   Luminance construction consisted of the IR/UV blocking filter exposures.  Curves and Levels applied in Photoshop to the Luminance construction to optimize object features.    Final LRGB combine was done in Photoshop using Luminance Layering.  .   Final Image size is approximately 1392 x 1040.

North is up in this image. M39 is loose open cluster located in the constellation of Cygnus. The cluster is one of the Milky Way's nearer clusters to Earth at a  distance of approximately 825 light years. NGC 7067 is the tiny cluster in the lower right corner. It is interesting to compare the two clusters one apparently large and the other apparently small. Or are they really the same size and just vat very different distances.  Horizontal FOV is 100'

Image center is approximately - Equatorial 2000: RA: 21h 28m 39s Dec: +4823'31"


All images and content remain the property of Jim Thommes - copyright 2003 - 2012

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