Comet 2023A3 Tsuchinshan-ATLAS on Nov 3, 2024

Click on image to enlarge

Date & Time: Nov 3 2024, from 18:18 to 19:00 JST(+0900)
Composed 8 shots with 6 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -18°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: Nov 3 2024, from 18:19 to 18:56 JST(+0900)
Composed 10 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, the comet Tsuchinshan-ATLAS was positioned in the eastern part of Ophiuchus in the western sky at evening twilight. Compared to last month, it has receded considerably from Earth, and the brightness of its coma is now at 6th magnitude. However, the dust tail extending eastward remains large. It spreads out in a fan shape, and it was observed to reach a length of nearly 4 degrees.
1st image: View angle: 2.5×1.7°
2nd image: View angle: 0.7×0.7°


2023A3 Tsuchinshan-ATLAS on Nov 22, 2024
2023A3 Tsuchinshan-ATLAS on Oct 15, 2024

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