Comet 24P Schaumasse on Dec 26, 2025


Date & Time: Dec 26 2025, from 25:28 to 26:13 JST(+0900)
Composed 11 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


Observed for the first time in this apparition, comet 24P/Schaumasse was located in the southwestern corner of Coma Berenices on this day, with a bluish, roughly 10th-magnitude coma visible. This region corresponds to the northern part of the Virgo Cluster; just north of the comet lies NGC4379, and to its northeast is NGC4396.
The comet's coma, as measured from this image, is about 10 arcminutes across. It is forecast to reach a maximum brightness of magnitude 8-9 in Jan 2026.
View angle: 0.70×0.70°


3I ATLAS on Dec 28, 2025

Copyright(c) 2025 by Naoyuki Kurita, All rights reserved.
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