Comet Borrelly on Jan 3, 2022


Date & Time: Jan 3 2022, from 18:20 to 18:49 JST(+0900)
Composed 8 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 19P Borrelly in that day has positioned at 5 degrees WNW of βCet in lower southwest evening skies. The comet has a 10th magnitude coma and an indistinct fan-like dust tail in east direction. The comet Borrelly will brighten up to 9th magnitude in March 2022, we can chase it under good conditions for a while.
  View angle: 0.70×0.70°


Borrelly on Feb 5, 2022
2021A1 Leonard on early morning of Dec 11, 2021

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