Comet 2021S3 PanSTARRS on early morning of Mar 9, 2024


Date & Time: Mar 8 2024, from 28:02 to 28:23 JST(+0900)
Composed 6 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 2021S3 PanSTARRS was positioned in the summer Milky Way about 5 degrees northeast of η Serpentis Cauda in the southeastern sky in the early morning. The brightness of the coma slightly exceeded the forecast at 9th magnitude, with a large curved tail extending towards the southwest direction. The comet is currently reaching almost maximum brightness and will gradually dim as it moves northward along the Milky Way.
View angle: 0.70×0.70°


2021S3 PanSTARRS on early morning of Apr 13, 2024
2021S3 PanSTARRS on early morning of Feb 10, 2024

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