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Contains:  NGC 6823, NGC 6820
Getting plate-solving status, please wait...
NGC 6820 & NGC 6823 in BiColor Ha & OIII, 


            Douglas J Struble
NGC 6820 & NGC 6823 in BiColor Ha & OIII

NGC 6820 & NGC 6823 in BiColor Ha & OIII

Technical card

Resolution: 4181x3345

Dates:July 19, 2018Aug. 2, 2018

Astrodon Ha 5nm: 89x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 211x240" (gain: 139.00) -20C bin 1x1

Integration: 20.0 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 13.50 days

Avg. Moon phase: 59.65%

Bortle Dark-Sky Scale: 6.00 job: 2180203

RA center: 295.859 degrees

DEC center: 23.262 degrees

Pixel scale: 0.648 arcsec/pixel

Orientation: 110.708 degrees

Field radius: 0.482 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


So very faint. Especially the OIII data. 14 hours alone was dedicated to OIII.

NGC 6820 is a small reflection nebula near the open cluster NGC 6823 in Vulpecula. The reflection nebula and cluster are embedded in a large faint emission nebula called Sh 2-86. The whole area of nebulosity is often referred to as NGC 6820.

Open star cluster NGC 6823 is about 50 light years across and lies about 6000 light years away. The center of the cluster formed about two million years ago and is dominated in brightness by a host of bright young blue stars. Outer parts of the cluster contain even younger stars. It forms the core of the Vulpecula OB1 stellar association.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


NGC 6820 & NGC 6823 in BiColor Ha & OIII, 


            Douglas J Struble