Deep Sky Object in Summer
Snake Nebula (Dark Nebula in Ophiuchus)

Click on image to enlarge

Date & Time: Jun 3 2022, from 24:04 to 24:46 JST(+0900)
Composed 6 shots with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial+Lacerta M-GEN
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -15°C)
Location: Furudono town, Fukushima pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


B72 / Dark Nebula, type 2 S
R.A.17h 23m 50.1s (2000.0)
Dec.-23°41' 51" (2000.0)
Apparent Size37×17'
Real Size7×3 light yrs.
Magnitude-
Distance650 light yrs.
Other IDsLDN 66
The Snake nebula is positioned at 1.5 degree north of sita Oph that marks the right leg of serpent holder. This field is squeezed between Scorpius and Sagittarius. The dark nebula has a formal name of Barnard 72, but the nickname of "Snake Nebula" is much familiar.
This nebula is one of most popular dark gaseous clouds distributed in the Milky Way in summer. Its span is equivalent to about 20 arc minutes, S-shaped string-like black lane can be taken only with normal photo lenses around the west edge of the Milky Way.

Dark nebulae around Snake Nebula Dark nebulae around Snake Nebula



vdB133
LBN1117

Copyright(c) 2022 by Naoyuki Kurita, All rights reserved.
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