M51
Whirlpool
Galaxy
M51, The Whirlpool Galaxy
Date: June 15, 16, 19, 2012
Cameras: SBIG STL6303E(Clear); STL11k(RGB)
Filters: AstroDon Clear, R, G, B filters
Camera control software: CCDSoft/MaximDL
Guiding/adaptive optics: internal autoguider
Camera temperature: -10C
Telescope: RCOS 24(Clear) PlaneWave CDK24(RGB)
Telescope control software: TheSkyX/ RCOS TIM, PlaneWave telescope control interface
Mount: RCOS Equatorial Fork Mount/PlaneWave Ascension 200HR Equatorial Mount
Subexposures:
Luminance: 17 x 10 minute (unbinned)
RGB: 6x10min each RGB (binned 2x2)
Processing: CCDStack2, Photoshop CS6
Click above for 2100x1395
Below:
Luminance and LRGB versions stretched to show
outer envelope details.