The Lobster Claw Nebula (Sharpless 157)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 90 arcminutes across.
From Cambridge , the Lobster Claw Nebula is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight at around 03:55, 71° above your northern horizon. At dusk, it will become visible at around 21:42 (EDT), 31° above your north-eastern horizon.
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Name
The Lobster Claw Nebula (Sharpless 157)
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Object type
HII region
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Position
| Right ascension: | 23h16m [1] |
| Declination: | +60°02' [1] |
| Constellation: | Cassiopeia |