Messier M61 - NGC4303 - Barred Spiral Galaxy in Virgo
Messier M61 - NGC4303 - Barred Spiral Galaxy in Virgo - 4/5/2013 (Processed stack)
Variable high thin cloud present during imaging.
Vignetting from OAG evident - pushed too far into field.
DeepSkyStacker 3.3.2 Stacked 80% of 19 Images ISO 800 75 Sec, 65 DARK, 75 BIAS, 0 FLATS, Post-processed with Adobe Photoshop CS5
Telescope - Bintel BT200 f/4.0 Newtonian (borrowed from Stephen Boyd) with Baader MPCC Coma Corrector, Hutech IDAS LPS-P2 filter, Canon 40D DSLR field 64' x 95', Ambient 16C. EQMOD EQASCOM with Ascom 6 for mount control. Backyard EOS 2.09 for Image acquisition. Mount - Skywatcher NEQ6 Pro. Guidescope - Teleskop Service OAG9 Off Axis Guider with Starlight Xpress Superstar (mono) CCD guide camera and Stark Labs PHD auto guiding software.