Comet Borisov on early morning of Nov 4, 2019


Date & Time: Nov 3 2019, from 28:27 to 28:47 JST(+0900)
Composed 4 shots with 6 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: Canon EOS 6D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(3056×3056)
Device Size...20×20mm, Sensitivity...ISO4000


The interstellar comet Borisov three weeks later from my previous observation has just entered in Sextans from Leo, positioned at 7.5 degrees southeast of Regulus, alpha Leo in dawn eastern skies. The coma's brightness could be estimated about 16th magnitude, comparatively easy to capture through a 10"-telescope. However I could detect no clear tails yet. The comet Borisov will move southward from now on, we can chase it until the end of 2019 at northern hemisphere. An indistinct galaxy in left hand side of the image is UGC5687 with a brightness of 15th magnitude.
  View angle: 0.70×0.70°


Borisov on early morning of Nov 10, 2019
Borisov on early morning of Oct 10, 2019

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