Hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  NGC 6823
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Emission Nebula NGC6820 with Open Cluster NGC6823, 


            Theodore Arampatzoglou
Emission Nebula NGC6820 with Open Cluster NGC6823
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Emission Nebula NGC6820 with Open Cluster NGC6823

Technical card

Imaging telescopes or lenses: William Optics FLT 110

Imaging cameras: SBIG ST-10XME

Mounts: Skywatcher NEQ6 PRO

Guiding telescopes or lenses: William Optics zenithstar 1 80x480

Guiding cameras: Meade DSI C

Software: PixInsight  ·  CCDStack  ·  Photoshop  ·  Software Bisque TheSky6 Pro  ·  Imagenomic Noiseware professional  ·  eqmod  ·  ccdsoft

Filters: Ha 5nm

Dates:June 12, 2016

Frames:Ha 5nm: 39x600" -10C bin 1x1

Integration: 6.5 hours

Darks: ~20

Flats: ~25

Flat darks: ~25

Bias: ~115

Avg. Moon age: 7.53 days

Avg. Moon phase: 51.52%

Bortle Dark-Sky Scale: 9.00

Basic astrometry details

Astrometry.net job: 3306141

RA center: 19h 43' 11"

DEC center: +23° 16' 12"

Pixel scale: 1.214 arcsec/pixel

Orientation: 0.887 degrees

Field radius: 0.645 degrees

Resolution: 3156x2160

Locations: Via Lactea Observatory, Paramithia, Epirus, Greece

Data source: Backyard


After several months I am back to deep sky imaging....

NGC 6820 is an emission nebula that surrounds open cluster NGC 6823 in Vulpecula, near M27, the Dumbbell Nebula. The nebula NGC 6820 is also called Sharpless catalog Sh 2-86.

The most striking feature is the trunk-like pillar of dust and gas protruding from the east side of the nebula towards the open cluster, NGC 6823 in the west. The center of the open cluster is about two million years old and is predominantly represented by many young, bright blue stars. Outer parts of the cluster intimately involving pillars of emission nebula NGC 6820, contain even younger stars.
Open star cluster NGC 6823 is about 50 light years across and lies about 6000 light years away
*From Wikipedia, the free encyclopedia

Instruments and exposure data:

W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
Meade DSI
Filters: 5nm Hα Astrodon
Sky-Watcher EQ6 Pro

Lum:39*10min bin1x1
Total exposure time:6h 30min

Location: Vironas,Athens Greece