Subject:M51
Author: Marc Leduc
Scope: William Optics Megrez 90mm
Instruments:CGEM, Canon 20D, TRF-2008 TeleVue Flattener, Astronomul CLS/CCD Filter Guiding Celestron Rich Field 80mm, PHD Orion Starshoot Autoguider
Exposure time:28 images, 1 hre., 5 min., 53 sec., ISO 400.
Place & Seeing:Lac-Beauport, Quebec, Canada
Date:April-March, 2011
Remarks: Deep Sky Stacker, Adobe Element 7