Comet Pons-Brooks on Mar 2, 2024


Date & Time: Mar 2 2024, from 18:50 to 19:05 JST(+0900)
Composed 6 shots with 3 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, the comet Pons-Brooks was located in the northwestern low sky in the evening, approximately 8 degrees northwest of α-Andromedae (Alpheratz). The brightness of the coma was estimated to exceed the forecasted 7th magnitude, ranging between 5th and 6th. The greenish ion component covering the coma extends to nearly 10 arcminutes in apparent diameter, with a clear ion tail stretching in several streaks for almost 20 arcminutes towards the north. Combined with the bell-shaped coma, the comet presents an appearance reminiscent of a jellyfish.
View angle: 0.70×0.70°


Pons-Brooks on Mar 9, 2024
Pons-Brooks on Feb 10, 2024

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