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Contains:  NGC 6823, NGC 6820
Getting plate-solving status, please wait...
NGC 6820/23, 


            Gary Opitz
NGC 6820/23

NGC 6820/23

Technical card

Resolution: 4368x3256

Dates:Sept. 11, 2017Sept. 27, 2017

ZWO Hydrogen Alpha 7nm: 50x240" (gain: 139.00) -10C bin 1x1
ZWO Oiii: 50x240" (gain: 139.00) -10C bin 1x1

Integration: 6.7 hours

Darks: ~35

Flats: ~30

Bias: ~80

Avg. Moon age: 13.53 days

Avg. Moon phase: 56.99%

Bortle Dark-Sky Scale: 5.00

Temperature: 9.00 job: 1764598

RA center: 19h 43' 32"

DEC center: +23° 20' 56"

Pixel scale: 0.798 arcsec/pixel

Orientation: 146.485 degrees

Field radius: 0.604

Locations: Home Observatory, Rochester, New York, United States


This is my first bi-color process of NGC 6820/23, a star cluster/emission nebula located in Vulpecula. I synthesized the green channel with a blend of Ha and Oiii.



Gary Opitz
License: None (All rights reserved)

Sky plot

Sky plot


NGC 6820/23, 


            Gary Opitz