Comet 2023E1 ATLAS on Jun 17, 2023


Date & Time: Jun 17 2023, from 23:33 to 24:15 JST(+0900)
Composed 8 shots with 6 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.: -15°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


On this day, I observed the comet 2023E1 ATLAS for the first time. It was located approximately 7.5 degrees west of the Beta UMi, near the border between Ursa Minor and Draco. The comet had an apparent magnitude of 10 and was a circumpolar star positioned at a declination of 75 degrees. It appeared as a faint, hazy blue coma, and the presence of a tail could not be confirmed. The comet is expected to pass near the celestial North Pole and will likely be observable under favorable conditions with a magnitude of 9 to 10 from July to August 2023.
This image has been cropped with an equivalent focal length of 1000mm.
View angle: 1.35×0.9°


2023E1 ATLAS on Jul 16, 2023
2022E3 ZTF on Feb 24, 2023

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