Deep Sky Object in Summer
Sh2-1 & Sh2-7 (Diffused Nebulae in Scorpius)


Date & Time: Apr 27 2012, from 23:44 to 24:03 JST(+0900)
Composed 3shots with 8min. exposed
Optical: AF zoom-Nikkor ED 80-200mmF2.8 (f=105mm, Aperture: F2.8)
with Astronomik CLS-CCD filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Canon EOS 550D (Remodeled)
Location: Koumi town, Nagano pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
CCD Sensitivity...ISO800




Sh2-1 / Reflection Nebula, type 4 E+R
R.A.15h 55m 40.0s (2000.0)
Dec.-25° 40' 00" (2000.0)
Apparent Size150'×60'
Real Size30 light yrs.
Magnitude -
Distance650 light yrs.
Other IDsLBN1093
Sh2-7 / Diffused Nebula, type 4 R
R.A.16h 00m 24.0s (2000.0)
Dec.-22° 56' 00" (2000.0)
Apparent Size80'
Real Size46 light yrs.
Magnitude -
Distance650 light yrs.
Other IDsLBN1099
This image shows you very indistinct diffused nebulae surrounding pi(in south) and delta(in north) Sco., forming the head of Scorpius, resistered as Sh2-1 and Sh2-7, respectively.
You can see that Sh2-1 has a mixed structure with reddish emission nebula and bluish reflection nebula. And Sh2-7 in north looks vast round shape, including some clusters inside.




Nebulosities around head of Scorpius

Around Sh2-16


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