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Contains:  NGC 6823, NGC 6820
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Emission Nebula NGC 6820, 


            Randal Healey
Emission Nebula NGC 6820

Emission Nebula NGC 6820

Technical card

Resolution: 3155x2291

Dates:June 10, 2019June 11, 2019June 12, 2019

Astrodon BLUE 36mm - Gen2 E-Series Tru-Balance: 13x180" -10C bin 1x1
Astrodon GREEN 36mm - Gen2 E-Series Tru-Balance: 14x180" -20C bin 1x1
Astrodon HA 36mm - 5nm: 15x600" -10C bin 1x1
Astrodon Olll 36mm - 3nm: 12x600" -10C bin 1x1
Astrodon RED 36mm - Gen2 E-Series Tru-Balance: 16x180" -10C bin 1x1

Integration: 6.7 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 8.73 days

Avg. Moon phase: 63.93% job: 2756727

RA center: 295.777 degrees

DEC center: 23.290 degrees

Pixel scale: 0.839 arcsec/pixel

Orientation: 189.070 degrees

Field radius: 0.454 degrees

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Own remote observatory


NGC 6820 (also known as Sh 2-86) is an emission nebula that surrounds the open cluster NGC 6823, located some 6,000 light-years away from Earth in the faint northern constellation of Vulpecula (the Fox), near the Dumbbell Nebula (Messier 27)

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, which is about 50 light-years across, is about two million years old and is dominated in brightness by many young, bright stars, packed in a Trapezium-formed region of about 1.3 x 0.7 light-years across. Outer parts of the cluster, involving pillars of the emission nebula, contain even younger stars.

The huge pillars of gas and dust are probably formed when surrounding gas and dust is pushed and eroded away by stellar winds and radiation from the brightest cluster stars. Remarkable dark globules of gas and dust (Bok globules) are also visible in the nebula.

Bok globules, are dark clouds of dense cosmic dust and gas within star-forming regions in which usually star formation takes place. They most commonly result in the formation of double or multiple star systems.



Randal Healey
License: None (All rights reserved)

Sky plot

Sky plot


Emission Nebula NGC 6820, 


            Randal Healey

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