Comet 2009R1 McNaught on early morning of Jun 6, 2010


Date & Time: Jun 5 2010, from 25:34 to 25:57 JST(+0900)
Composed 12 shots with 2 minutes 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: Mt. Mizuishi, Iwaki city, Fukushima pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4256×2832)
Device Size...FX format (36×24mm)
CCD Sensitivity...ISO3200



Comet 2009R1 McNaught & NGC752

Date & Time: Jun 5 2010, from 26:15 to 26:20 JST(+0900)
Composed 6 shots with 30sec. exposed
Optical: AF zoom-Nikkor 80-200mmF2.8D (f=200mm, Aperture: F3.2)
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D700
Location: Mt. Mizuishi, Iwaki city, Fukushima pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4256×2832)
Device Size...FX format (36×24mm)
CCD Sensitivity...ISO1600


The comet 2009R1 McNaught in that day has been positioned in eastern Andromeda, closed to an open cluster of NGC752 with about a degree in apparent angle. The comet of 6th magnitude in brightness became drastically brighter and bigger compared with it of last observation, I could catch it easily with a portable binocular in spite of the glare of last quarter of Moon. An upper picture shows you the comet has an evolved stripe-like structures of ion tail with length of over 20 arc minutes.


2009R1 McNaught on early morning of Jun 12, 2010
2009R1 McNaught on early morning of Jun 1, 2010

Copyright(c) 2010 by Naoyuki Kurita, All rights reserved.
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