Comet 2025K1 ATLAS on Nov 28, 2025


Date & Time: Nov 28 2025, from 25:37 to 25:45 JST(+0900)
Composed 14 shots with 30 seconds exposed
Optical: VIXEN 20cm(7.9") VISAC with a conversion lens (f=1278mm, F6.4)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Canon EOS R6
Location: Hiraiso, Hitachi-naka city, Ibaraki pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(2335×2335)
Device Size...15.2×15.2mm, Sensitivity...ISO12800


On this day, comet 2025K1 ATLAS had moved northward into the central region of Camelopardalis, reaching a declination of 74 degrees. The coma remained about the same brightness as last week at 10th magnitude, and the dust tail had shifted to point toward the SSW. The fragmented nucleus appeared to have continued disintegrating and could not be clearly identified in this image.
View angle: 0.70×0.70°


2025T1 ATLAS on Nov 23, 2025
2025K1 ATLAS on early morning of Nov 22 & 24, 2025

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