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Sh2 113 H-alpha RGB, 


Sh2 113 H-alpha RGB

Sh2 113 H-alpha RGB

Technical card

Resolution: 3145x2443

Dates:Nov. 8, 2019

Astrodon Blue Tru-Balance E-Series Gen 2: 15x240" bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 15x240" ISO-1
Astrodon H-alpha 5nm: 16x1800" bin 1x1
Astrodon Red Tru-Balance E-Series Generation 2: 15x240" bin 1x1

Integration: 11.0 hours

Avg. Moon age: 11.01 days

Avg. Moon phase: 84.86% job: 3041433

RA center: 320.227 degrees

DEC center: 38.091 degrees

Pixel scale: 1.220 arcsec/pixel

Orientation: 0.197 degrees

Field radius: 0.675 degrees

Locations: Stanford Faculty Observatory, Stanford, California, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility


Sh 2-113 and Sh 2-114 form, respectively, the southern and northern portions of a filamentary circle that resembles a supernova remnant. However, no supernova remnant appears to be recorded for this location.

Examining this region in hydrogen-alpha suggests that these nebulae are joined to the equally mysterious Sh 2-118 and Sh 2-123 in a long ridge of nebulosity south and south-east of Sh 2-117, the North American nebula. Sh 2-113, Sh 2-118 and Sh 2-123 have distance estimates of about 4000 parsecs. If this ridge is also at 4000 parsecs, it must be enormous.




License: None (All rights reserved)

Sky plot

Sky plot


Sh2 113 H-alpha RGB,