Caldwell 80 - NGC5139 Omega Centauri Globular Cluster - 14/04/2012 (Processed and cropped stack)
The largest globular cluster in the Milky Way of approx. 40' extent (1 +1/3 Moon). It consists of about 4,000,000 stars and is 16,000LY away.
2X Powermate with borrowed f/4 Newtonian bringing the configuration to f/8. Slightly cropped to show only from the central portion of the image to minimise coma distortion. Wow, what an impressive collection of stars and easily my best image of this to date! The combination of focal length and DSLR pixel size are clearly a good match.
DeepSkyStacker 3.3.2 Stacked 80% of 8 Images ISO 800 300 Sec, 32 DARK, 0 BIAS, 0 FLATS, Post-processed by Photoshop CS5
Telescope - Bintel BT200 f/4.0 Newtonian with no Coma corrector (borrowed from Stephen Boyd),Teleview 2X 2" Powermate, Hutech IDAS LPS-P2 filter, Canon 400D DSLR, Ambient 15C. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Star Shoot Auto Guider.