Contains:NGC 6823, NGC 6820
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NGC 6820 Nebula & NGC 6823 Cluster in Ha, 




    

        Douglas J Struble
NGC 6820 Nebula & NGC 6823 Cluster in Ha

NGC 6820 Nebula & NGC 6823 Cluster in Ha

Technical card

Resolution: 4656x3520

Dates: July 19, 2018

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

Integration: 5.9 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 7.06 days

Avg. Moon phase: 46.60%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 2164520

RA center: 295.872 degrees

DEC center: 23.234 degrees

Pixel scale: 0.648 arcsec/pixel

Orientation: 110.701 degrees

Field radius: 0.525 degrees

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

Data source: Backyard

Description

This is my finished Ha of NGC 6820 and 6823. We were on a roll for a while with clear skies, but have been on hold now in finishing off OIII and SII. I have captured some OIII and see no nebulosity in a single OIII sub, so I am thinking I will need to capture 10 to 15 hours of 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.

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Author

dugstruble
Douglas J Struble
License: None (All rights reserved)
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NGC 6820 Nebula & NGC 6823 Cluster in Ha, 




    

        Douglas J Struble