Comet 2022E3 ZTF on early morning of Dec 25, 2022

Click on image to enlarge

Date & Time: Dec 24 2022, from 29:07 to 29:37 JST(+0900)
Composed 5 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
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -25°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



Date & Time: Dec 24 2022, from 28:20 to 28:36 JST(+0900)
Composed 5 shots with 4 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


Comet 2022E3 ZTF, which was observed for the first time on this day, is located inside the semicircle of Corona Borealis in the eastern sky at dawn. The brightness of the coma was estimated as 8th magnitude. A large fan-shaped dust tail was observed in the north direction, and an ion tail was observed in the northwest direction extending more than 1.5 degrees to the outside of the field. The comet is expected to approach the earth down to 0.29 a.u. in February 2023 and brighten up to 5th magnitude.
The first image has been cropped with an equivalent focal length of 700mm.
  1st image: View angle: 1.9×1.3°
  2nd image: View angle: 0.7×0.7°


2022E3 ZTF on early morning of Jan 2, 2023
2020V2 ZTF on Feb 25, 2022

Copyright(c) 2022 by Naoyuki Kurita, All rights reserved.
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