M 51, Whirlpool Galaxy

M 51, Whirlpool Galaxy

© Griffin, HapDateLocation: January 18, 2010 GriffinHunter Observatory Bethune, SC Camera: QSI 583wsg Filters: Astrodon E Series Generation 2 LRGB CCD Temperature: -20 C Instrument: Planewave CDK 12.5″
Focal Ratio: f8
Mount: AP-1200
Guiding: Auto via the QSI camera’s built in Off-Axis Guider mirror and a Starlight Express Lodestar Guider
Conditions: Clear and cool
Weather: 45 F, still
Exposure: 280 minutes total (10 x 10 minutes Luminance binned 1×1, 12 x 5 minutes each in RGB binned 2×2) 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.

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