M 101, Pinwheel Galaxy

M 101, Pinwheel Galaxy

© Griffin, HapCamera: 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 an SBIG ST-402 Guider
Conditions: Clear and cool
Weather: 52F – 35F, still
Exposure: 380 minutes total (23 x 10 minutes Luminance binned 1×1, 10 x 5 minutes each in RGB binned 2×2)
Capture: CCDAutopilot 4 w Maxim DL 5.08 Camera Control, focused automatically w FocusMax
Processing: Frame calibrations, alignment and stacking with ImagesPlus v3.80. Finishing in Photoshop CS4.