Comet 2022E3 ZTF on Jan 30-31, 2023

Click on image to enlarge

Change during 24 hours (f=530mm prime focus)

Date & Time: Right: Jan 30 2023, from 26:32 to 27:08 JST(+0900), 4min.×10shots
Left: Jan 31 2023, from 27:48 to 28:24 JST(+0900), 4min.×10shots
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: 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


Click on image to enlarge

Change during 24 hours (f=324mm prime focus)

Date & Time: Right: Jan 30 2023, from 26:28 to 27:13 JST(+0900), 4min.×12shots
Left: Jan 31 2023, from 27:44 to 28:29 JST(+0900), 4min.×12shots
Optical: BORG 67FL with conversion lens (f=324mm, F4.8)
with IDAS LPS-V4 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D810A
Location: Hiraiso, Hitachi-naka city, Ibaraki pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(7362×4912)
Device Size...FX format (36×24mm)
Sensitivity...ISO2500, White Balance...Daylight


This page shows you the comet 2022E3 ZTF which became 5th magnitude two days and one day before the closest approach to the Earth. The comet is moving southwest at a speed of about 6.3 degrees per day in the northeastern part of Camelopardalis. Declination reached 80 degrees at midnight on January 30 (early morning on January 31), and apparently the direction of the tail changed rapidly from south to southeast. The second set of images was taken with a short-focused telescope. Although the ion tail reaches more than 4 degrees in the apparent length, seems to be changing faintly at midnight on Jan 31. The dust tail appears to be widely diffused from the south to the east direction.
1st image: View angle: 1.5×2.3°
2nd image: View angle: 4.0×6.0°


2022E3 ZTF on Feb 11, 2023
2022E3 ZTF on Jan 28, 2023

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