M13 The Great Globular Cluster in Hercules This is 4 hours of RGB (color) combined with 1 hour and 20 minutes luminance shot from my humble back yard observatory (8x8 shed) in Fremont Michigan, from around midnight the 7th April through to the 9th April. (full moon was 3.19pm 6th April) Total Exposure time 5 hours and 20 minutes Clear Skies Terry Hancock www.downunderobservatory.com Location: DownUnder Observatory, Fremont MI Date of Shoot April 7th, 9th 2012 Camera: QHY9M monochrome CCD 8x5 min RED 8x5 min GREEN 8x5 min BLUE 4x10 min RED 4x10 min GREEN 4x10 min BLUE 8 x 5 min Luminance 4 x 10 min Luminance Camera: QHY9M monochrome CCD 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 Stacking software Deep sky Stacker Registered with Registar Post Processed with Photoshop CS5