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


            Jim Knapp
Double Cluster
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Double Cluster

Technical card

Imaging telescopes or lenses: Astro Tech AT65EDQ 65mm f/6.5 ED quadruplet

Imaging cameras: Canon XSi, Baader modified

Mounts: CGEM

Guiding telescopes or lenses: Converted 9x50 finder

Software: DeepSky Stacker  ·  Adobe Photoshop 5 CS  ·  BackyardEOS v3 deluxe

Filters: Baader 2" Moon and Skyglow Filter

Dates:Oct. 24, 2014

Frames: 66x300"

Integration: 5.5 hours

Avg. Moon age: 0.57 days

Avg. Moon phase: 0.36%

Basic astrometry details job: 418338

RA center: 2h 21' 5"

DEC center: +57° 8' 38"

Pixel scale: 3.366 arcsec/pixel

Orientation: -178.831 degrees

Field radius: 1.782 degrees

Resolution: 3182x2099

Locations: home, Albuquerque, New Mexico, United States

Data source: Backyard


Diffraction spikes added using two thin wires mounted in front of objective.



Jim Knapp
License: None (All rights reserved)

Sky plot

Sky plot


Double Cluster, 


            Jim Knapp