Comet Borisov on early morning of Nov 30, 2019


Date & Time: Nov 29 2019, from 28:07 to 28:44 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 interstellar comet Borisov in that day was positioned at central region of Crater in dawn lower southeastern skies. The coma's brightness has reached around its maximum, could be estimated as about 15th magnitude, and you can detect a dimmed dust tail stretched in northwest direction as with my previous observation. The comet Borisov will move southward from now on, we can chase it until the end of 2019 when the comet has the closest approach to the Earth at northern hemisphere.
  View angle: 0.70×0.70°


Borisov on early morning of Dec 28, 2019
Borisov on early morning of Nov 10, 2019

Copyright(c) 2019 by Naoyuki Kurita, All rights reserved.
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