Comet 2012X1 LINEAR on early morning of Nov 6, 2013

Date & Time: Nov 5 2013, from 28:06 to 28:21 JST(+0900)
Composed 8 shots with 2min. exposed
Optical: VIXEN 20cm(7.9") VISAC with a conversion lens (f=1278mm, F6.4)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D700
Location: Kujihama, Hitachi city, Ibaraki pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device size...DX format (24×16mm)
Sensitivity...ISO3200, White Balance...Daylight

This image shows you the comet 2012X1 LINEAR six days later of my previous obsevation. The comet has positioned in lower northeast dawn skies, around southwest edge of the constellation of Bootes. The shell-like coma of the comet has furthermore expanded, and the image can show us that the coma has dustributed and been fairly indistinct. Although the measurement error is considered large, the apparent diameter can be estimated about 10 arc minutes.
The elevation of the comet will be getting higher and higher from now on, however it's considered that the comet will be more and more blurred due to the expansion of the coma.
(View angle: 1.05×0.7°)

2012X1 LINEAR on early morning of Nov 12, 2013

2012X1 LINEAR on early morning of Oct 31, 2013

Copyright(c) 2013 by Naoyuki Kurita, All rights reserved.
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