I attach M51 Whirlpool galaxy astrophoto,
Corbera de Llobregat(Barcelona)Spain.
Dates:25-04-2016-01-05-2016Telescope: Astrograph AG 10” f:3.8
Cámera:SBIG ST10XME
Mount: 10 MICRON GM 2000
Exposures:
Chip temperature -15oC
Luminance: 33x300 sec.bin1
Red 15x300 sec.bin1
Green 15x300 sec.bin1
Blue 15x300 sec.bin1
Calibrated:darks-flats-
Programs.:
CCDStack2 +
Photoshop CS6
Best Regards
Jose Mundo.