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This is a supernova remnant in the constellation of Gemini. It gets
its name for obvious reasons. The bright star to the right is Propus,
one of the stars that make up Castor's feet.
Date: 12/30/2011
Location:
4Domes Observatory
Telescope: TMB130SS @ f/4.7
Mount: AP-1200
Camera: QSI-583WSG
Guiding: Maxim DL w/ Starlight Xpress Lodestar Off
Axis
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LRGB Combine Exposures: |
Ha - 15 x 1200 seconds, Bin 1x1 (5 hours total and used
for nebula's luminance)
Luminance - 10x600 Seconds, Bin 1x1 (1.6 hours total for
star luminance)
Red - 5x300 Seconds, Bin 2x2
Green - 5x300 Seconds, Bin 2x2
Blue - 5x300 Seconds, Bin 2x2
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Post Processing: |
ImagesPlus: Calibration, align and
combine, digital development
Photoshop CS4: Luminance, color combine, levels, curves, saturation
NeatImage: Noise reduction
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