Deep Sky Object in Winter
LBN1022 (Diffused Nebula in Monoceros)


Date & Time: Dec 27 2025, from 23:30 to 24:25 JST(+0900)
Composed 10 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


LBN1022 / Diffused Nebula, type 3 E+R
R.A.06h 56m 00.0s (2000.0)
Dec.-08°18' 00" (2000.0)
Apparent Size22.0×15.0'
Real Size19×13 light yrs.
Magnitude -
Distance3000 light yrs.
LBN 1022 is a faint diffuse nebula located about 1.5° due west of the open cluster M50 in the southern part of Monoceros. It spans about 20 arcminutes, and in the foreground, dark nebulae with complex structures appear to obscure the red emission nebula behind them. In Lynds' Bright Nebula Catalog (LBN), the position is listed about 18 arcminutes west of its true location, but this nebula is identified as LBN 1022. Its distance from the Solar System is about 3000 light-years.

→Wide-field around LBN1022



LBN 981
LBN 1023

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