Comet Nishimura on early morning of Sep 2, 2023

Click on image to enlarge

Date & Time: Sep 1 2023, from 27:16 to 27:34 JST(+0900)
Composed 10 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.: -9°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...100


On this day in 2023, Comet 2023P1 Nishimura is located in the eastern lower sky in the early morning, approximately 4.7 degrees NNE of the Beehive Cluster (M44) in Cancer. Despite the challenging conditions with a bright moon after full moon, a well-concentrated coma with 7th magnitude and an ion tail extending towards WNW were observed. Although it appears blurry, the tail seems to extend beyond the field of view by more than 2 degrees. 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 7, 2023
Nishimura on early morning of Aug 26, 2023

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