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Contains:  Praesepe, M 44, Beehive cluster, NGC 2632
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M44 Beehive Cluster (First Light), 


            Douglas J Struble
M44 Beehive Cluster (First Light)

M44 Beehive Cluster (First Light)

Technical card

Resolution: 4276x2900

Dates:March 7, 2019March 8, 2019March 9, 2019

Astronomik Deep-Sky B: 90x60" -30C bin 1x1
Astronomik Deep-Sky G: 90x60" -30C bin 1x1
Astronomik Deep-Sky R: 90x60" -30C bin 1x1

Integration: 4.5 hours

Darks: ~50

Flats: ~50

Flat darks: ~50

Bias: ~250

Avg. Moon age: 1.67 days

Avg. Moon phase: 3.71%

Bortle Dark-Sky Scale: 6.67 job: 2575886

RA center: 130.180 degrees

DEC center: 19.650 degrees

Pixel scale: 1.086 arcsec/pixel

Orientation: 85.152 degrees

Field radius: 0.780 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


First light with my new Stellarvue SVX102T-R and Orion Atlas Pro. I choose something relatively easy to start out with making sure everything was going well.

Messier 44 or M44 (also designated NGC 2632) is an open cluster in the constellation Cancer. It has an apparent visual magnitude of 3.7 and its angular diameter is 95 arc-minutes. M44 lies at an estimated distance of 577 light years.

M44, the Beehive or Praesepe Cluster is a large, naked eye star cluster known since antiquity. It is one of the closest open clusters and may have formed in the same interstellar cloud with the Hyades Cluster. According to Kharchenko et al. (2005), the distance of M44 is 610 light years and its diameter is 15 light years. It contains 1000 stars and its estimated age is 500-700 million years.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


M44 Beehive Cluster (First Light), 


            Douglas J Struble