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Contains:  NGC 7789
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Caroline's Rose Cluster, NGC 7789, 





    
        

            Steven Bellavia
Caroline's Rose Cluster, NGC 7789

Caroline's Rose Cluster, NGC 7789

Technical card

Resolution: 2402x1601

Dates:Oct. 7, 2018

Frames:Optolong L: 60x30" ISO800 bin 1x1

Integration: 0.5 hours

Avg. Moon age: 27.73 days

Avg. Moon phase: 3.63%

Bortle Dark-Sky Scale: 4.00

Temperature: 20.00

Astrometry.net job: 2294215

RA center: 23h 57' 27"

DEC center: +56° 44' 13"

Pixel scale: 2.565 arcsec/pixel

Orientation: 179.158 degrees

Field radius: 1.028

Data source: Backyard

Description

Caroline's Rose Cluster, NGC 7789 is an open cluster in Cassiopeia, discovered by Caroline Herschel in 1783. Found among the rich star fields of the Milky Way, star cluster NGC 7789 lies about 8,000 light-years away, with stars that all formed at the same time, approximately 1.6 billion years ago.
Over 50 light-years across, Caroline's Rose spans about half a degree, the size of a full moon. Shining at magnitude 6.7, it is just beyond the ability of the naked eye, but is a beautiful object in binoculars or a small telescope.

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bellavia
Steven Bellavia
License: None (All rights reserved)
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Caroline's Rose Cluster, NGC 7789, 





    
        

            Steven Bellavia