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Sh2 202 H-alpha RGB, 


Sh2 202 H-alpha RGB

Sh2 202 H-alpha RGB

Technical card

Resolution: 3118x2356

Dates:Oct. 27, 2019

Astrodon Blue Tru-Balance E-Series Gen 2: 12x240" bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 12x240" bin 1x1
Astrodon H-alpha 5nm: 16x1800" bin 1x1
Astrodon Red Tru-Balance E-Series Generation 2: 12x240" bin 1x1

Integration: 10.4 hours

Avg. Moon age: 28.78 days

Avg. Moon phase: 0.63% job: 3014932

RA center: 49.731 degrees

DEC center: 59.624 degrees

Pixel scale: 1.220 arcsec/pixel

Orientation: 0.841 degrees

Field radius: 0.662 degrees

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

Data source: Own remote observatory

Remote source: Non-commercial independent facility


Sh 2-202 is a large diffuse nebula that appears to surround the ionising star cluster Stock 23, which lies in the direction of the enormous Cam OB1 association. According to a 2003 study, Sh 2-201 contains low mass young stellar objects in a carbon monoxide cloud.

Kharchenko gives a distance of 380 pc and an age of 32,3 million years for Stock 23, She lists HD 237091 (B1:V:nnpe) and HD 20134 (B2.5IV-V) as probable members.

Avedisova places Sh 2-202 in star formation region 140.59+1.91 along with the young stellar objects WB89 474 and [TRC83] 5 as well as the infrared source IRAS 03144+5932.



License: None (All rights reserved)

Sky plot

Sky plot


Sh2 202 H-alpha RGB, 



In these public groups

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