Deep Sky Object in Autumn
Blue Snowball (NGC7662 in Andromeda)


Date & Time: Sep 24 2016, from 25:15 to 25:37 JST(+0900)
Composed 59 shots with 20 sec. exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain (f=2500mm, F10.0)
Auto-guided with Meade LX200 Equatorial
Camera: Celestron Skyris 445C + IR cut filter
Location: Ooizumi, Hokuto city, Yamanashi pref.



NGC7662 / Planetary Nebula, type IV+III
R.A.23h 25m 53.9s (2000.0)
Dec.+42° 33' 00" (2000.0)
Apparent Size32×28"
Real Size0.28×0.24 light yrs.
Magnitude8.9
Distance1790 light yrs.
NGC7662 is a small planetary nebula in northern region of Andromeda. You can find out it about 3 degrees west of iota Andromedae, which forms the tip of her right arm. The nebula has a diameter of about 30 arc seconds and a visual brightness of about 9th magnitude.
NGC7662 has a round shape, but this image shows you the nebula has non-even brightness. The beautiful bluish color is one of characteristics of NGC7662, and the nebula has an unique nickname of "The Blue Snowball". A good seeing condition will allow you to appreciate the impressive bluish shape through medium-sized telescopes. It's estimated that the nebula is about 1800 light years away.

⇒ Display the spectral profile of NGC76627 (in new window)



Bubble Nebula(NGC7635)
NGC7822

Copyright(c) 2016 by Naoyuki Kurita, All rights reserved.
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