The Whirlpool Galaxy M51 LRGB
This is the RGB + Luminance. I have to say this has been one of my toughest projects to process. If conditions allow I will be adding HA to this soon.
Total Exposure time 10 hours and 40 minutes.
Incidentally I am using CCD Stack for the very first time and I am impressed, I might have to go back and reprocess everything now:)
I hope you like the result.
16 x 10 min each RGB un binned
16 x 10 min Luminance un binned
Location: DownUnder Observatory, Fremont MI
Date of Shoot 12th,13th,18th and 19th April 2012
Camera: QHY9M monochrome CCD www.astrofactors.com
StarlightXpress Color Filter Wheel
Scope: Astronomy Technologies Astro-Tech 10" f/8 Ritchey-Chrétien astrograph
Astro Tech 2" Field Flattener.
Autoguided using QHY5 autoguider, StarlightXpress Ultra Slim Off Axis guider
Paramount GT-1100S German Equatorial Mount (with MKS 4000)
Image Aquisition software Maxim DL5
Registed, Calibrated and Stacked in CCD Stack
Post Processed with Photoshop CS5