NGC 891 - Spiral Galaxy in
Andromeda
Copyright 2010 Hap Griffin
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NGC 891 is a fine example of a typical spiral galaxy as seen edge-on. The equatorial dust lane and the central bulge are very obvious in this photograph.
NGC 891 lies at a distance of 8.9 million light years.
Date/Location:
October 9, 2010 Griffin/Hunter
Observatory Bethune, SC
Camera: QSI 583wsg
Filters: Astrodon E Series Generation 2 LRGB
CCD Temperature: -10 C
Instrument: Planewave 12.5" CDK
Focal Ratio: f/8
Mount: AP-1200
Guiding: Auto via the QSI camera's built in Off-Axis Guider
mirror and an SBIG ST-402 Guider
Conditions: Cool and clear
Weather: 65 - 50 F, still
Exposure: 300 minutes total (12 x 10 min Luminance, 6 x 10 min each in RGB)
Capture: CCDAutopilot 4 w/ Maxim DL Camera Control, focused automatically w/
FocusMax
Processing: Frame calibrations, alignment and stacking with ImagesPlus v3.80.
Finishing in Photoshop CS4.