Comet Tuttle-Giacobini-Kresak on Apr 15, 2017

Date & Time: Apr 15 2017, from 20:13 to 20:39 JST(+0900)
Composed 13 shots with 2min. exposed
Optical: VIXEN 20cm(7.9") VISAC with a conversion lens (f=1278mm, F6.4)
with Baader Planetarium Moon&Skyglow filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D810A
Location: Hitachi-oota city, Ibaraki pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(4800×3200)
Device Size...DX format (24×16mm)
Sensitivity...ISO6400, White Balance...Daylight

The comet Tuttle-Giacobini-Kresak in that day has positioned in southern Draco, could be observed at northeast evening skies. The comet has a distributed 6th magnitude coma with an apparent diameter of about 8 arc minutes, it seems that the comet has an indistinct dust tail in southwest direction. The comet when this image taken has just passed the perihelion on previous day, almost reached to its maximum brightness.
  View angle: 1.05×0.70°

Comet Tuttle-Giacobini-Kresak on Apr 28, 2017

Comet Tuttle-Giacobini-Kresak on Mar 4, 2017

Copyright(c) 2017 by Naoyuki Kurita, All rights reserved.
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