Deep Sky Object in Winter
Rosette Nebula (NGC2237 in Monoceros)

Date & Time: Nov 14 2009, from 27:24 to 28:37 JST(+0900)
Mosaic of 2 flames of 10min.×4shots
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial & Meade Pictor 201XT
Digital Camera: Nikon D50 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000)
CCD Sensitivity...ISO800

NGC2237-9 / Diffused Nebula, type 1 E
R.A06h 30m 18.0s (2000.0)
Dec.+05° 03' 00" (2000.0)
Apparent Size64×61'
Real Size67×64 light yrs.
Magnitude -
Distance3600 light yrs.
Other IDsSh2-275, LBN949
The Rosette Nebula is a vast diffused nebula about 10 degrees east of Betelgeuse, alpha Ori. It's extremely photographed and has a size of two times of that of the full moon.
Actually, this nebula carries four separate NGC numbers 2237, 2238,2239 and 2246 although it usually goes under the number of NGC2237. It takes a large telescope to distinguish the whole of nebula because that's very faint, so you'll detect the nebula as a ghostly bit of fluff around the star cluster of NGC2244. By the way, I can remind the nebula of not only a flower of rose but also a skull, and the nebula has both impressions of beauty and eeriness. How do you think?
It is surmised that the nebula include lots of lumps of gases coalescing, and producing either a new star or perhaps even a whole new solar system. The nebula is about 3600 light years away.

Around NGC2182

Wide field around Rosette Nebula

Copyright(c) 2009 by Naoyuki Kurita, All rights reserved.
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