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Abell 31 (Bicolor)

Technical card

Resolution: 2100x1680

Dates:Dec. 8, 2017Dec. 9, 2017Dec. 20, 2017Jan. 8, 2018Jan. 12, 2018Jan. 13, 2018Jan. 14, 2018Jan. 17, 2018Jan. 22, 2018Jan. 24, 2018March 20, 2018March 21, 2018March 22, 2018

Astrodon 3nm OIII: 44x1800" -10C bin 1x1
Astrodon 5nm Ha: 44x1800" -10C bin 1x1

Integration: 44.0 hours

Darks: ~20

Flats: ~50

Bias: ~100

Avg. Moon age: 12.97 days

Avg. Moon phase: 26.73% job: 1982138

RA center: 133.550 degrees

DEC center: 8.917 degrees

Pixel scale: 0.871 arcsec/pixel

Orientation: 91.208 degrees

Field radius: 0.325 degrees

Locations: Backyard, Magnolia, TX, United States


This is one of a handful of targets that were started since November on the new Esprit 150. My original goal for Abell 31 was 50 hours... but after two solid months of clouds, I'm happy to "settle" for 44 hours and compete collection on this exceedingly faint target, woohoo! :-)



John Renaud
License: None (All rights reserved)

Sky plot

Sky plot


Abell 31 (Bicolor), 


            John Renaud