Comet 2023A3 Tsuchinshan-ATLAS on Nov 22, 2024


Date & Time: Nov 22 2024, from 18:05 to 18:15 JST(+0900)
Composed 6 shots with 2 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 Tsuchinshan-Atlas was located near the northernmost part of the Serpens (Cauda) in the western evening sky. It could be found approximately 20 arc minutes west of θ Serpentis, which is captured on the left edge of this photograph. The comet has become much smaller and dimmer since the last observation, with a coma brightness of 9th magnitude. The bell-shaped dust tail is still well developed, showing a typical cometary appearance.
View angle: 0.7×0.7°


Olbers on May 4, 2024
2023A3 Tsuchinshan-ATLAS on Nov 3, 2024

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