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Rare Sh2-104 Emission Nebula in HOO, 


            Douglas J Struble
Rare Sh2-104 Emission Nebula in HOO
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Rare Sh2-104 Emission Nebula in HOO

Technical card

Dates:July 9, 2019July 13, 2019

Astrodon Ha 5nm: 216x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 351x120" (gain: 200.00) -20C bin 1x1

Integration: 18.9 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 9.48 days

Avg. Moon phase: 69.54%

Bortle Dark-Sky Scale: 8.00

Basic astrometry details job: 3251116

RA center: 20h 17' 24"

DEC center: +36° 39' 21"

Pixel scale: 0.648 arcsec/pixel

Orientation: 314.979 degrees

Field radius: 0.440 degrees

Resolution: 3819x3054

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

Data source: Backyard


Sh2-104, also cataloged as DWB 14, is about 14,000 light years away toward the Cygnus constellation.

Seldom imaged by amateur astronomers, this is a very faint emission nebula in the constellation Cygnus. This is located due east of the popular Crescent Nebula. Sh-104 is viewed by professional astronomers as a good illustration of the "collect and collapse" model of star formation triggered by the rapid expansion of a Helium II region.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


Rare Sh2-104 Emission Nebula in HOO, 


            Douglas J Struble

In these public groups

Sharpless2 Objects