Deep Sky Object in Winter
vdB 30 (Diffused Nebula in Camelopardalis)

Click on image to enlarge

Date & Time: Jan 17 2026, from 20:38 to 21:50 JST(+0900)
Composed 10 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 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


vdB 30 / Diffused Nebula
R.A.04h 54m 03.0s (2000.0)
Dec.+66°20' 34" (2000.0)
Apparent Size20.0'
Real Size40 light yrs.
Magnitude-
Distance6930 light yrs.
This image captures a faint nebula spread around αCam (magnitude 4.3), visible near the center of the frame. A ring-shaped structure emitting Hα light surrounds the star. Although its cataloged size is 20 arcminutes, direct measurement from this photograph reveals an extent of just over 1 degree. A loop resembling a shock front can be seen to the north, while to the south the nebula appears to be swept outward and greatly expanded. This structure is thought to have been shaped by the stellar wind from αCam. The distance to the nebula is estimated to be about 7000 light-years.



vdB 29, vdB 31
vdB 37

Copyright(c) 2026 by Naoyuki Kurita, All rights reserved.
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