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I agreeImaging telescope or lens:Borg 90FL
Imaging camera:ZWO ASI 183MM Pro
Mount:Sky-Watcher EQ-6R Pro SynScan
Guiding telescope or lens:Agena Astro 50mm f/3.9 Guidescope
Guiding camera:ASI224MC
Focal reducer:Borg 0.72X Quadruplet Super Reducer, #7872
Software:Noel Carboni's Astro Tools for PhotoShop Noel Carboni Actions, Annie's Astro Actions V7, Stark Labs Nebulosity 4.2, Digital Photo Professional, IDEIKI AstroPhotography Tool (APT), SharpCap Pro 3.2, PHD2 Guiding
Filters:Astronomik 6nm OIII, Optolong 7nm Ha 2"
Resolution: 4100x3500
Dates:Sept. 26, 2019
Frames:
Astronomik 6nm OIII: 17x360" (gain: 140.00) -15C bin 1x1
Optolong 7nm Ha 2": 10x300" (gain: 120.00) -15C bin 1x1
Integration: 2.5 hours
Darks: ~30
Flats: ~30
Flat darks: ~30
Avg. Moon age: 26.89 days
Avg. Moon phase: 7.67%
Bortle Dark-Sky Scale: 3.00
Mean FWHM: 5.00
Temperature: 8.00
Astrometry.net job: 2953211
RA center: 19h 43' 14"
DEC center: +23° 20' 38"
Pixel scale: 1.360 arcsec/pixel
Orientation: 180.430 degrees
Field radius: 1.018
Data source: Traveller
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.
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