Comet 2017K2 PanSTARRS on Jun 24, 2022


Date & Time: Jun 24 2022, from 21:53 to 22:31 JST(+0900)
Composed 7 shots with 6 minutes exposed
Optical: PENTAX 7.5cm(2.9") ED refractor (f=500mm, F6.7)
with IDAS LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -10°C)
Location: Furudono town, Fukushima pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


The comet 2017K2 PanSTARRS in that day has positioned at a degree WSW of βOph, forming the pentagon of Ophiuchus with a 9th magnitude coma similar to a previous observation. This image shows you that the comet has the greenish ionized composition around the coma and a 0.8°-long dust tail stretched to northern direction.
This image has cropped with an equivalent focal length of 1000mm.
  View angle: 0.90×1.35°


Schwassmann-Wachmann 1 on Dec 3, 2022
2017K2 PanSTARRS on May 27, 2022

Copyright(c) 2022 by Naoyuki Kurita, All rights reserved.
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