Deep Sky Object in Autumn
Around vdB 9 (Reflection Nebulae in Cassiopeia)

Click on image to enlarge

Date & Time: Nov 19 2023, from 22:19 to 23:15 JST(+0900)
Composed 7 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.: -23°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 7 / Reflection Nebula, type R
R.A.02h 51m 28.0s (2000.0)
Dec.+67°49' 00" (2000.0)
Apparent Size3.1'
Real Size1.2 light yrs.
Magnitude6.4
Distance1400 light yrs.
vdB 9 / Reflection Nebula, type 4 R
R.A.02h 51m 58.8s (2000.0)
Dec.+68°53' 19" (2000.0)
Apparent Size3.0×2.0'
Real Size1.1×1.2 light yrs.
Magnitude6.4
Distance1400 light yrs.
Other IDsLBN 643
This captures reflection and dark nebulae in the northeastern part of the constellation Cassiopeia, approximately 8 degrees northeast of ε Cas. The upper (north) portion in the image is vdB 7, while the lower (south) part is vdB 9; both reflection nebulae have sizes of about 3 arc minutes each. Only a small portion of the extensive molecular cloud covering the entire field reflects the light from nearby 6th magnitude stars. Within the same molecular cloud, the portion cast in shadow on the eastern side is identified with dark nebula with IDs such as LDN 1355 and LDN 1358. The distance to this molecular cloud is approximately 1400 light years.


Deepsky objects around vdB 9 Deepsky objects around vdB 9



vdB 8
Around vdB10

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