Comet Wirtanen on Apr 5, 2008


Date & Time: Apr 5 2008, from 21:00 to 21:14 JST(+0900)
Composed 4shots with 4 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon with a conversion lens (f=742mm, F4.6)
Auto-guided with TAKAHASHI JP Equatorial
Digital Camera: Fujifilm FinePix S2Pro
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...12bit CCD-RAW, converted to 16bit TIFF(3024×2016)
CCD Sensitivity...ISO1600, White Balance...Auto


The is image has captured a month later from previous observation, comet Wirtanen has moved to eastern part of Auriga with a coma brightness of about 11th magnitude. The comet will be undetectable with small telescopes soon.


Chen-Gao on Apr 5, 2008
Wirtanen on Mar 8, 2008

Copyright(c) 2008 by Naoyuki Kurita, All rights reserved.
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