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Hemisphere:  Northern  ·  Contains:  NGC 4627  ·  NGC 4631
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NGC-4631, Whale Galaxy, 


            Ray Morris
NGC-4631, Whale Galaxy
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NGC-4631, Whale Galaxy

Technical card

Imaging telescopes or lenses: CELESTRON 8

Imaging cameras: Canon DSLR EOS 60da

Mounts: CGEM

Guiding telescopes or lenses: Orion 80mm Short Tube

Guiding cameras: Celestron NexGuide

Focal reducers: Starizona SCT Corrector f/7.5

Software: DeepSkyStacker  ·  Binary Rivers Backyard EOS  ·  Adobe Photoshop CS3

Dates:Jan. 11, 2014

Frames: 23x180" ISO6400

Integration: 1.1 hours

Darks: ~10

Avg. Moon age: 10.54 days

Avg. Moon phase: 81.15%

Basic astrometry details job: 2917143

RA center: 12h 41' 52"

DEC center: +32° 32' 27"

Pixel scale: 0.912 arcsec/pixel

Orientation: 88.627 degrees

Field radius: 0.397 degrees

Resolution: 2672x1634

Locations: Douglas Springs Trailhead, Tucson, AZ, Tucson, Arizona, United States

Data source: Backyard


Galaxies are the bane of my existence! I have the hardest time processing them! This is one of the best I've done.



Ray Morris
License: None (All rights reserved)

Sky plot

Sky plot


NGC-4631, Whale Galaxy, 


            Ray Morris