Deep Sky Object in Autumn
PK149-3.1 (Planetary Nebula in Perseus)

Click on image to enlarge

Date & Time: Dec 19 2020, from 22:07 to 22:57 JST(+0900)
Composed 10 shots with 5 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-V4 Light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
Digital Camera: Canon EOS 6D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Sensitivity...ISO3200


PK149-3.1 / Planetary Nebula, type SNR?
R.A03h 49m 05.9s (2000.0)
Dec.+50°00' 14" (2000.0)
Apparent Size13.0'
Real SizeN/A
Magnitude -
DistanceN/A
This image shows you a comparatively large but extraordinary dimmed planetary nebula positioned at 4 degrees east of α Persei (Mirphak). The nebula has a round shape with diameter of 13 arc minutes. However, I could photograph only northern part; the nebula looks semi-circular. The brightness of central star is 16.5th magnitude, and it's possible that the nebula is a supernova remnant.
This image has been cropped with an equivalent focal length of 700mm.



PK138+4.1
Abell85

Copyright(c) 2020 by Naoyuki Kurita, All rights reserved.
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