Comet 2022E3 ZTF on early morning of Jan 2, 2023

Click on image to enlarge

Date & Time: Jan 1 2023, from 27:17 to 27:59 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 EM-200 Equatorial
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -25°C)
Location: Hitachi-oota city, Ibaraki pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


This is comet 2022E3 ZTF taken at the beginning of 2023. It was located in the eastern morning sky, about 5.8 degrees northeast of α Corona Borealis. The brightness of the coma was estimated to be 7th magnitude. As in the previous photographing, a fan-shaped dust tail was observed in the north direction, and an ion tail extending more than 1.5 degrees to the outside of the field was observed in the northwest direction. The ion tail has been fading since the end of 2022, and it was finally confirmed in the enhanced image.
The first image has been cropped with an equivalent focal length of 700mm.
View angle: 1.9×1.3°


2022E3 ZTF on Jan 20-21, 2023
2022E3 ZTF on early morning of Dec 25, 2022

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