Sharpless 187 (Sh2-187)

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Location / Date

Zellerndorf, Oct - Dec 2017

Telescope / Mount / Guiding

ASA 10" Astrograph, ASA 3" Wynne-Corrector (focal length 910mm)
ASA DDM60, no Guiding

Camera / Exposure

Moravian G3-16200, Astrodon filters
Lum   109 x 6min
R        13 x 6min
G        12 x 6min
B        15 x 6min

Total exposure time: 14h 54min


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Sh2-187 is a young and compact HII region in the constellation of Cassiopeia. Located about 1.5° north of the star δ Cassiopeiae (Ruchbah), which causes the diffraction pattern at the bottom.

The presence of star formation can be identified in the numerous infrared sources discovered in the nebula.

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