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CLICK ON IMAGE
FOR FULL SIZE VIEW
Scope: C8 f/6;
Location: Blair Valley, Anza Borrego Desert, CA; 21 Oct. 2006; Camera:
Artemis285
Exposure: 10 x 240 sec Luminance exposures with IR Block Filter (bin 1x1);
6 x 120 sec RGB (bin 2x2)
Processing: Images were captured in Artemis Capture (as FITs). Aligned/stacked
in Registax 3 and saved as FITS. Luminance and Color channels were numerically
scaled and color balanced in Astroart. Channels were co-registered
in Astroart. Curves and Levels applied in Photoshop to optimize object
features. Final LRGB combine was done in Photoshop using Luminance
Layering (or LLRGB). G2V color calibration factors were applied to
the color channels for color correction. Selective sharpening with layer
mask was applied to galaxy spiral arms. Color balancing and final
touches were done in Photoshop. Final Image size is approximately
1392x1040.
North is to the right in this image. NGC 891 is a galaxy located in the
constellation of Andromeda. It is an edge on galaxy - we view it from Earth at
it's edge. The dark line through its center is a dark dust lane. The
distance of NGC 891 to Earth is approximately 10 million light years. This
image replaces and earlier image that can be seen in the Archives
here. Horizontal FOV is about 26'
Image Center
approximately - Equatorial 2000: RA: 02h 22m 33s Dec: +42°20'50"
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