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Abell 21 3nm Ha, 


            Salvatore Giambruno
Abell 21 3nm Ha

Abell 21 3nm Ha

Technical card

Resolution: 4483x3574

Dates:Dec. 2, 2017

Frames: 50x1200"

Integration: 16.7 hours

Avg. Moon age: 13.41 days

Avg. Moon phase: 97.95% job: 1844310

RA center: 112.249 degrees

DEC center: 13.251 degrees

Pixel scale: 0.587 arcsec/pixel

Orientation: 349.113 degrees

Field radius: 0.467 degrees

Locations: Home Observatory, Southern California, California, United States


16-2/3 hours 3nm Ha data.
11.3 Mag surface brightness.
Very dim object.



Salvatore Giambruno
License: None (All rights reserved)

Sky plot

Sky plot


Abell 21 3nm Ha, 


            Salvatore Giambruno