Deep Sky Object in Winter
Eskimo Nebula (NGC2392 in Gemini)


Date & Time: Nov 9 2019, from 25:33 to 26:25 JST(+0900)
Composed 77 shots with 30 sec. exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain (f=2500mm, F10.0)
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Camera: Celestron Skyris 445C + IR cut filter
Location: Ooizumi, Hokuto city, Yamanashi pref.


NGC2392 / Planetary Nebula, type IIIb+IV
R.A.07h 29m 12.0s (2000.0)
Dec.+20° 55' 00" (2000.0)
Apparent Size47×43"
Real Size0.31×0.28 light yrs.
Magnitude8.3
Distance1360 light yrs.
NGC2392 is a tiny planetary nebula about 4 degrees ESE of delta Gem that marks the body of Castor, the elder brother of twins. The nebula has an apparent diameter of less than 1 arc minute, and it might be difficult to distinguish the nebula from the normal stars unless 4-inch telescopes or larger. You need a magnifying power over 100 to enjoy the detailed structure.
The planetary nebula has a bright central region and the surrounding dimmed ring-structure. This shape gave NGC2392 a unique nickname of "Eskimo Nebula" because the shape associates a face of Eskimo with his head hooded. The Eskimo nebula shows us the gaseous matter spread in outer space by a dead star.

⇒ Display the spectral profile of NGC2392 (in new window)



NGC2371
NGC2438

Copyright(c) 2019 by Naoyuki Kurita, All rights reserved.
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