Deep Sky Object in Summer
Around LDN 183 (Dark Nebula & Molecular Cloud in Serpens & Libra)

Click on image to enlarge

Date & Time: Apr 4 2025, from 24:52 to 26:56 JST(+0900)
Mosaic of 2 flames of 8min.×8shots
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-D1 light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial+SBIG STV
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -20°C)
Location: Ooizumi, Hokuto city, Yamanashi pref.

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


LDN 183 / Dark Nebula
R.A.15h 53m 54.0s (2000.0)
Dec.-03°09' 00" (2000.0)
Apparent Size17.0'
Real SizeN/A
Magnitude -
DistanceN/A
Other IDsLDN 184
LBN 10 / Molecular Cloud, type 6 R
R.A.15h 54m 00.0s (2000.0)
Dec.-04°36' 00" (2000.0)
Apparent Size60.0×30.0'
Real SizeN/A
Magnitude -
DistanceN/A
The bright star in the upper right of the field is μ Serpentis, located in the constellation Serpens Caput. The boundary line between Serpens and Libra runs horizontally just above the center of the image. This photograph covers an area of 2.4×2.9°, and relatively dense dark nebulae and molecular clouds are drifting through this region. In the shadowed area of a molecular cloud about 1.2° northeast of μ Serpentis lies the dark nebula cataloged as LDN 183. About 1.7° south of this is another clump of molecular cloud-its brighter part is designated LBN 10, and the darker upper part is cataloged as the dark nebula LDN 134.
Objects around LDN 183 Objects around LDN 183



LBN 1117
Celestial bodies around Galactic center

Copyright(c) 2025 by Naoyuki Kurita, All rights reserved.
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