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 #.
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Hyades - 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 and f/6.9 variants.
DeepSkyStacker 3.3.4 Stacked 100% (3) of 3 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.
ConstellationTaurusHyadesAsterismCaldwellC41
From 2018 Refocusing 2
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