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Contains:  10 Per, 7 chi Per, 8 Per, B201, Double cluster, Misam, NGC 869, NGC 884, NGC869, NGC884, The star 7Per, The star 8Per
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NGC 869 and 884 Double Cluster, 


            Stan Smith
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NGC 869 and 884 Double Cluster

Technical card

Dates:Nov. 25, 2019

Optolong Blue 1.25": 25x30" bin 1x1
Optolong Green 1.25": 25x30" bin 1x1
Optolong Lum 1.25": 25x30" bin 1x1
Optolong Red 1.25": 25x30" bin 1x1

Integration: 0.8 hours

Avg. Moon age: 28.30 days

Avg. Moon phase: 1.70%

Bortle Dark-Sky Scale: 4.00 job: 3132399

RA center: 2h 20' 17"

DEC center: +57° 4' 31"

Pixel scale: 2.163 arcsec/pixel

Orientation: -124.809 degrees

Field radius: 1.283 degrees

Resolution: 3339x2663

Locations: DarkSky Observatory, Westminster, SC, United States

Data source: Backyard


The Double Cluster is the common name for the open clusters NGC 869 and NGC 884, which are close together in the constellation Perseus. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7500 light years. -Wikipedia



Stan Smith
License: None (All rights reserved)

Sky plot

Sky plot


NGC 869 and 884 Double Cluster, 


            Stan Smith

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