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Sh2-115 and Abell 71 (PLN 85+4.1)

Technical card

Resolution: 2409x3186

Dates:Sept. 17, 2018Sept. 19, 2018Sept. 23, 2018Oct. 12, 2018

Astrodon Ha 3nm-31mm: 217x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 74x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 64x180" (gain: 139.00) -15C bin 1x1

Integration: 17.8 hours

Darks: ~30

Bias: ~50

Avg. Moon age: 8.55 days

Avg. Moon phase: 59.62%

Bortle Dark-Sky Scale: 5.00 job: 2693875

RA center: 308.618 degrees

DEC center: 46.984 degrees

Pixel scale: 1.416 arcsec/pixel

Orientation: 9.426 degrees

Field radius: 0.785 degrees

Locations: Monterey Pines Observatory, Monterey, California, United States

Data source: Backyard


Sh2-115 is northwest of Deneb in the constellation Cygnus. It is a emission nebula whose complex glowing patterns are powered by an embedded open star cluster, Berkeley 90. In the top left of the frame is Abell 71 (PLN 85+4.1), now thought to be misclassified as a planetary nebula, but is an area of gas concentration associated with Sh2-115. All in all, it is a a remarkably rich area of nebular structure in the night sky.



Gary Lopez
License: None (All rights reserved)



Reworked the stars and cooled the color temperature a bit

Sky plot

Sky plot


Sh2-115 and Abell 71 (PLN 85+4.1), 


            Gary Lopez