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Contains:  NGC 637
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NGC637 Open Star Cluster, 





    
        

            AlBroxton
NGC637 Open Star Cluster

NGC637 Open Star Cluster

Technical card

Imaging telescope or lens:Celestron C11 Celestron

Imaging camera:40D Canon

Guiding telescope or lens:80mm EON Orion

Software:Deep Sky StackerNoel's Tools5.00 Images Plus

Resolution: 850x553

Dates:Dec. 11, 2010

Frames: 14x60"

Integration: 0.2 hours

Avg. Moon age: 5.53 days

Avg. Moon phase: 30.84%

Astrometry.net job: 571050

RA center: 1h 43' 1"

DEC center: +64° 4' 12"

Orientation: 67.945 degrees

Field radius: 0.378

Locations: Leesburg home, Leesburg , Florida, United States

Description

NGC637 is an open cluster of stars in the constellation Cassiopeia. It has a Trumple13.1": rich cluster of two dozen stars arranged in an arc. There are five bright stars including a mag 10/11.2 double star at 9" separation. 8": 10 stars in cluster includes four mag 10 stars and fainter, mottled, over haze. At a distance of approximately 7,045 light years, this corresponds to a diameter of 9.8 light-years (3.0 pc). The estimated age of this cluster is 5–15 million years. Discovered by William Herschel 1787.
Observation Notes : 16 stars counted at 135X. Bright, pretty large, not compressed, pretty rich. Several of the brighter stars are about 10th mag. There is a lovely triangle of stars near the center. The cluster is easy in the 11X80 finder.


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Author

AlBroxton
AlBroxton
License: None (All rights reserved)
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            AlBroxton
    Original
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    NGC637 Open Star Cluster, 





    
        

            AlBroxton
    B

Sky plot

Sky plot

Histogram

NGC637 Open Star Cluster, 





    
        

            AlBroxton