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 #.

146 / 627

Large Magellanic Cloud - 15/10/2018 (Processed Stack)

First Light test with Pentax SMC Takumar 200mm f/4 M42 lens at f/5.6.
Chromatic aberration less noticeable than f/4 and vignetting gone with sharper stars in the corners, however bridge edge stars show internal reflection flare. See f/4 variant.

DeepSkyStacker 3.3.4 Stacked 100% (6) of 6 Images at 200mm f/5.6, ISO 1600 @ 30 Sec, 0 DARK, 0 BIAS, 0 FLATS, Post-processed with Adobe Photoshop CC 2018

Pentax SMC Takumar 200mm f/4 M42/EOS adapter, No filter, Baader BCF modified Canon 70D DSLR field 381' x 254' , Ambient ~15C. SkyWatcher Star Adventurer EQ mount unguided sidereal drive.

Caldwell C103 NGC2070 30 Doradus Tarantula Nebula Constellation Dorado Galactic Nebula Galaxy Large Magellanic Cloud LMC NGC NGC2070 Caldwell 103 30 Doradus Tarantula Nebula

From 2018 Refocusing 2