Comet Tsuchinshan 1 on Dec 17, 2023


Date & Time: Dec 17 2023, from 24:25 to 24:53 JST(+0900)
Composed 8 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 62P Tsuchinshan 1 was located within the body of Leo, approximately 9.6 degrees northeast of Regulus. Similar to the previous observation, an 8th magnitude coma, spreading out in a blue hue, was confirmed. An extremely faint tail extends in the western direction. The comet is currently moving rapidly towards the east, and forecasts suggest that it will brighten up to a maximum magnitude of 7 during the period from January to February 2024.
View angle: 0.70×0.70°


Tsuchinshan 1 on Jan 12, 2024
Tsuchinshan 1 on Dec 8, 2023

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