Deep Sky Object in Autumn
Around Sh2-157 (Diffused Nebula in Cassiopeia)

Date & Time: Oct 31 2011, from 22:39 to 24:01 JST(+0900)
Mosaic of 2 flames of 10min.×4shots
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with Astronomik CLS-CCD filter
Auto-guided with TAKAHASHI EM200 Equatorial & Meade Pictor 201XT
Digital Camera: Canon EOS 550D (Remodeled)
Location: Hitachi-oota city, Ibaraki pref.

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

This image has been created by emphasizing red reversed channel of color image in previous page.
You can see that a dimmed H-alpha region in northern region includes sevaral lanes of dark nebulae, NGC7635 and NGC7538 and so on are concentrated parts of the nebula.

Back To color image

Sh2-157 / Diffused Nebula, type 1 E
R.A.23h 15m 41.6s (2000.0)
Dec.+59° 55' 00" (2000.0)
Apparent Sizeabout 60'
Real Sizeabout 200 light yrs.
Magnitude -
Distance8150 light yrs.
Other IDsLBN537
NGC7635 / Diffused Nebula, type 1 E
R.A.23h 20m 40.0s (2000.0)
Dec.+61° 12' 00" (2000.0)
Apparent Size16×6'
Real Size20 light yrs.
Distance12400 light yrs.
Other IDsSH2 -162, LBN548
NGC7538 / Diffused Nebula, type 1 E
R.A.23h 13m 42.0s (2000.0)
Dec.+6131' 09" (2000.0)
Apparent Size9.7×6.1'
Real Size4.2 light yrs.
Magnitude -
Distance9130 light yrs.
Other IDsSH2 -158, LBN 542


Around Sh2-163

Copyright(c) 2011 by Naoyuki Kurita, All rights reserved.
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