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 #.

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Caldwell 39 - NGC2392 The Eskimo or Clownface Nebula Planetary Nebula in Gemini - 3/2/2013 (Processed cropped stack)

DeepSkyStacker 3.3.2 Stacked 85% of 17 Images ISO 800 60 Sec, 120 DARK @ 120sec, 70 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 LPS-P2 filter, Canon 40D DSLR field 64' x 95', Ambient 22C.
EQMOD EQASCOM with Ascom 6 for mount countrol. Backyard EOS 2.09 for Image acquisition. Mount - Skywatcher NEQ6 Pro. Guidescope - Orion ShortTube 80 with Starlight Xpress Superstar (mono) CCD guide camera and Stark Labs PHD auto guiding software.

caldwell c39 the eskimo or clownface nebula planetary nebula in gemini ngc ngc2392 c39 the eskimo or clownface nebula planetary nebula in gemini planetary nebula

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