Comet 2013UC10 Catalina on early morning of Dec 13, 2015


Date & Time: Dec 12 2015, from 28:21 to 29:22 JST(+0900)
Composed 20 shots with 3min. exposed
Optical: TAKAHASHI 16cm(6.3") epsilon with a conversion lens (f=742mm, F4.6)
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Canon EOS 550D (Remodeled)
Location: Furudono town, Fukushima pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600



Date & Time: Dec 12 2015, from 28:17 to 29:23 JST(+0900)
Composed 30 shots with 2min. exposed
Optical: BORG 67FL with a conversion lens (f=210mm, F3.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Canon EOS 600D (Remodeled)
Location: Furudono town, Fukushima pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600


The comet 2013UC10 Catalina in that day had a coma brightness of 6th magnitude, positioned at eastern Virgo, about 9 degrees NNW of the dawn Venus. That night has no influence of the moon light, I could record not only the thin 5 degrees-stretched ion tail in WNW but also the dimmed distribution of dust tail. In addition to a clear anti-tail in southeast direction, this image shows the dust tail has distributed widely in fan-shape to the direction of ion tail in WNW. The comet had the elevation of near 30 degrees at the start of twilight in that day, the observing condition is getting better day by day.
  The 1st images: View angle: 1.72×1.15°
  The 2nd images: View angle: 6.07×4.06°


2013UC10 Catalina on early morning of Dec 20, 2015
2013UC10 Catalina on early morning of Dec 8&9, 2015

Copyright(c) 2015 by Naoyuki Kurita, All rights reserved.
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