Caldwell Objects
A late 20th century amateur object catalogue of 109 objects to accompany the Messier catalogue, created by Sir Patrick Alfred Caldwell-Moore (March 1923 – 9 December 2012)
I recommend a book entitled 'The Caldwell Objects' by Stephen James O'Meara, 2002
Note: This gallery should be automatically sorted by Caldwell #.
Read MoreI recommend a book entitled 'The Caldwell Objects' by Stephen James O'Meara, 2002
Note: This gallery should be automatically sorted by Caldwell #.
Caldwell 63 - NGC7293 - Helix Nebula - 8/9/2012 (Processed cropped stack)
Image taken at Perth Observatory, ~30km East of Perth City centre.
DeepSkyStacker 3.3.2 Stacked 85% of 10 Images ISO 800 120 Sec, 61 DARK, 0 BIAS, 32 FLATS, Post-processed by Photoshop CS5
Telescope - Apogee OrthoStar LOMO 80/480 with Hotech SCA Field Flattener, Hutech IDAS LPS-P2 filter, Canon 40D DSLR field 106' x 159' , Ambient 13C. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Star Shoot Auto Guider.
caldwellc63 ngc7293 helix nebulangcngc7293 c63 helix nebulaplanetary nebula
