The Lobster Claw Nebula (Sharpless 157)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 90 arcminutes across.
From South El Monte , the Lobster Claw Nebula is visible in the dawn sky, becoming accessible around 22:30 (PDT), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 62° before fading from view as dawn breaks at 04:29.
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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 |