Comet Churyumov-Gerasimenko on Feb 25, 2022


Date & Time: Feb 25 2022, from 23:26 to 24:02 JST(+0900)
Composed 10 shots with 4 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow 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


The comet Churyumov-Gerasimenko in that day positioned at approx. 5.5 degrees WSW of ι-Cnc around the higher western skies in midnight. The brightness of coma has been down around 12th magnitude. However we can still detect a straight and dimmed dust tail stretched in west with a length of nearly a degree.
  View angle: 0.70×0.70°


2019L3 ATLAS on Nov 5, 2021
Churyumov-Gerasimenko on Feb 4, 2022

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