Comet 2023A3 Tsuchinshan-ATLAS on Oct 13, 2024

Click on image to enlarge

Date & Time: Oct 13 2024, from 18:12 to 18:13 JST(+0900)
Composed 3 shots with 30 seconds exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -10°C)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


Click on image to enlarge

Date & Time: Oct 13 2024, 18:12 JST(+0900), 2.5sec exposed
Optical: AF zoom-Nikkor 80-200mmF2.8ED (f=135mm, stop: F4.0)
Fixed on tripod
Digital Camera: Canon EOS 6D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Device Size...36×24mm, Sensitivity...ISO1600


The comet Tsuchinshan-Atlas, which passed perihelion at the end of September 2024, moved to the western evening sky in October, becoming a naked-eye comet with a peak magnitude of minus. The photographs on this page were taken under evening twilight the day after the comet's closest approach to Earth, and the brightness of the coma at that time was estimated to be between 1st and 2nd magnitude. On this day, the comet's angular separation from the Sun was about 19 degrees, and it set in the western sky while twilight remained.
The first photo captures the comet Tsuchinshan-Atlas through prime focus photography with a telescope, showing the development of a broad dust tail. The second photo is a fixed shot taken with a telephoto lens. With an exposure of only 2.5 seconds, the entire dust tail rising more than 5 degrees from the horizon, could be captured.
1st image: View angle: 2.5×1.7°
2nd image: View angle: 15×10°


2023A3 Tsuchinshan-ATLAS on Oct 15, 2024
2023A3 Tsuchinshan-ATLAS on Jun 29, 2024

Copyright(c) 2024 by Naoyuki Kurita, All rights reserved.
To top page To Comets&Meteors index