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NGC 1023 and IC 239



Scope: FSQ-106N 106 mm refractor at f/5, Location: Blair Valley, Anza Borrego Desert, CA  1  November 2013  Camera: Artemis285

Exposure: 16 x 6 min  (1x1 bin) exposure with UV/IR block, 8 x 3.5 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Artemis Capture (as FITs).  Calibrated, stacked (Sigma Combine), LRGB channel registration, equalization, central gradient removal - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop. Final color Calibration with eXcalibrator. This image is a straightforward LRGB combine with Luminance layering.  Final Image size is approximately 2000x1494.

North is to the upper right in this image. NGC1023 in the upper left and lies in the constellation of Perseus. IC 239 is in the lower right and lies in the constellation of Andromeda. The Perseus / Andromeda border cuts diagonally from upper right to lower left. A close inspection of NGC 1023 reveals a blue "smudge" on the upper end. This is the companion NGC 1023A. This smaller companion galaxy is thought to be interacting with the larger NGC 1023. This pair is also known as Arp 135. IC 239 is a face on spiral  galaxy hiding among foreground stars of our own Milky Way. NGC 1023 is estimated to be 34 million light years distant from Earth; IC 239 is estimated between 30-40 million light years distant. Horizontal FOV is 55'


Image center is approximately - Equatorial 2000: RA: 02h 38m 18s Dec: +3901'30"


All images and content remain the property of Jim Thommes - copyright 2003 - 2013

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