Comet 2021S3 PanSTARRS on early morning of Apr 13, 2024


Date & Time: Apr 12 2024, from 26:41 to 27:26 JST(+0900)
Composed 12 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


On this day, comet 2021 S3 PanSTARRS was located in the northeastern sky before dawn within the Milky Way, about 5.5 degrees northeast of β Cygni (Albireo) in the constellation of Cygnus. The comet, past its peak brightness, exhibited a slightly dimmer coma of around 10th magnitude, along with a tail extending towards the west. Due to numerous faint stars in the vicinity, the extent of the tail appeared somewhat indistinct.
View angle: 0.70×0.70°


2021S3 PanSTARRS on early morning of May 4, 2024
2021S3 PanSTARRS on early morning of Mar 9, 2024

Copyright(c) 2024 by Naoyuki Kurita, All rights reserved.
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