Deep Sky Object in Autumn
Sh2-188 (Supernova remnant in Cassiopeia)

Click on image to enlarge

Date & Time: Oct 21 2023, from 26:25 to 27:20 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


Sh2-188 / Supernova remnant, type 1 E?
R.A.01h 30m 30.0s (2000.0)
Dec.+58° 23' 30" (2000.0)
Apparent Size9.0'
Real Size1.9 light yrs.
Magnitude -
Distance710 light yrs.
Other IDsLBN 633, PK 128-4.1
Sh2-188 is a small-scaled diffused nebula lying about 3 degrees south of δ Cas. The nebula looks like a reddish diffused nebula but has a shape of hemisphere. It's considered that the nebula is a supernova remnant and has a catalogue number of planetary nebula. We are needed a fairly large ranged telescope to capture the nebula because of its small size of about 9 arc minutes.



Sh2-181, Sh2-182
Sh2-202

Copyright(c) 2023 by Naoyuki Kurita, All rights reserved.
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