Comet Nishimura on early morning of Aug 26, 2023

Click on image to enlarge

Date & Time: Aug 25 2023, from 27:02 to 27:31 JST(+0900)
Composed 20 shots with 1.5 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -5°C)
Location: Hiraiso, Hitachi-naka city, Ibaraki pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...300


This is Comet 2023P1 Nishimura, two weeks after its discovery. It is currently situated approximately 6.3 degrees SSE of Pollux in the eastern lower dawn skies. It features a prominent, bright coma with an apparent brightness of 8th magnitude, and an ion tail extending about a degree towards the west is clearly visible. The comet is expected to rapidly increase in brightness from here on, but as it approaches the Sun, observation conditions will deteriorate.
This image has been cropped with an equivalent focal length of 700mm.
View angle: 1.92×1.28°


Nishimura on early morning of Sep 2, 2023
Nishimura on early morning of Aug 21, 2023

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