Comet Schwassmann-Wachmann 1 on Dec 3, 2022


Date & Time: Dec 3 2022, from 22:39 to 22:58 JST(+0900)
Composed 10 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


This image shows you the 11th magnitude comet Schwassmann-Wachmann 1 in which a large outburst occurred in late Nov 2022. It is located high in the midnight zenith, about 9.5 degrees WSW of Castor in the constellation Gemini. You can see the coma with a diameter of about 2 minutes is spreading.
  View angle: 0.70×0.70°


Schwassmann-Wachmann 1 on Dec 23, 2022
2017K2 PanSTARRS on Jun 24, 2022

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