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Contains:  NGC 957, NGC 884, Double cluster, NGC 869, The star 9Per, The star 7Per, The star 8Per
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The Double Cluster, 


            Nico Carver
The Double Cluster

The Double Cluster

Technical card

Resolution: 3820x2152

Dates:Nov. 16, 2019Nov. 22, 2019

20x60" ISO400
Astrodon Tru-Balance 1.25" 5nm Ha: 72x300" (gain: 200.00) -15C bin 1x1

Integration: 6.3 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 21.81 days

Avg. Moon phase: 52.81%

Bortle Dark-Sky Scale: 9.00 job: 3075006

RA center: 2h 27' 25"

DEC center: +57° 0' 14"

Pixel scale: 4.669 arcsec/pixel

Orientation: 337.728 degrees

Field radius: 2.844

Locations: Backyard, Somerville, MA, United States

Data source: Backyard


This is my first experiment with running two full rigs at once. All was shot from my backyard in Somerville, MA (Bortle 9).

H-alpha: ZWO ASI-1600MM-C and Canon 200mm f/2.8 L wide open.
RGB: Nikon D800 (Mod) and Stellarvue SVQ86

This is part of a much larger mosaic I am working on, but I wanted to do a version where the double cluster was emphasized.



Nico Carver
License: Attribution-ShareAlike Creative Commons

Sky plot

Sky plot


The Double Cluster, 


            Nico Carver