Deep Sky Object in Winter
Around Sh2-227 (Diffused Nebula in Auriga)

Date & Time: Oct 12 2012, from 26:19 to 26:55 JST(+0900)
5 shots composed with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with Astronomik CLS-CCD filter
Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
Digital Camera: Canon EOS 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
CCD Sensitivity...ISO1600

Sh2-227 / Diffused Nebula, type 5 R
R.A.05h 19m 51.0s (2000.0)
Dec.+38° 55' 00" (2000.0)
Apparent Size22.5'
Real Size80 light yrs.
Magnitude -
Distance14,000 light yrs.
Other IDs LBN 781
NGC1857 / Open Cluster, type I 3 m
R.A.05h 20m 06.0s (2000.0)
Dec.+39° 20' 36" (2000.0)
Apparent Size5.0'
Real SizeN/A
# of Stars40
Sh2-227 is a faint diffused nebula positioned in the Auriga's pentagon, 6 degrees southeast of Capella. You can recognize that the nebula has uneven structures in almost round region with a diameter of a bit larger than 20 arc minutes. You can see a small open cluster of NGC1857 in 0.5 degrees north of the nebula, about 40 member stars have been gathered in 5 arc minutes in diameter. The cluster looks unexpectedly striking because of its high star density.

Sh2-223, 224

Around Sh2-232

Copyright(c) 2012 by Naoyuki Kurita, All rights reserved.
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