Deep Sky Object in Autumn
Sh2-140 (Diffused Nebula in Cepheus)

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Date & Time:	Nov 14 2009, from 22:45 to 23:16 JST(+0900)
	Composed 4shots with 10 minutes exposed
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 x 2000)
	CCD Sensitivity...ISO800

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Sh2-140 / Diffused Nebula, type 5 E R.A. 22h 19m 00.0s (2000.0) Dec. +63° 17' 30" (2000.0) Apparent Size 10.8 x 4.4' Real Size 25 light yrs. Magnitude - Distance 2900 light yrs. Other IDs LBN 505 This image has been captured a small emission nebula of Sh2-140 about 5 degrees north from zeta Cephei. The nebula has a size of about 10 arc minutes, it has a unique apparent shape of the crescent. We can recognize that a vast dark nebula is obstructing reddish emission nebulosity in background, the accidental arrangement of those nebulae have formed the peculiar and interesting shape. It's estimated that the nebula is about 2900 light years away.

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Sh2-135

Sh2-142

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