Comet Ikeya-Zhang on Mar 8 & 9, 2002

1. f=180mm tele

Date & Time: Mar 8 2002, from 19:06 to 19:32 JST(+0900)
3 images composed with 10min. exposed
Optical: TAMRON SP f=180mmF2.5, Aperture: F3.5
Auto-guided with TAKAHASHI EM-200 Equatorial
Camera: VIXEN VX-1
Film: Konicacolor New Centuria 800
Location: Ooizumi vil., Yamanashi pref.


2. f=1278mm prime focus

Date & Time: Mar 8 2002, 19:06 to 19:16, 19:20 to 19:30 JST(+0900)
2 images composed
Optical: VIXEN 20cm(7.9") VISAC with conversion lens (f=1278mm, F6.3)
Auto-guided with TAKAHASHI EM-200 Equatorial & Meade Pictor 201XT
Camera: KOHEISHA Astrocamera S with Horseman 6x7 Roll Film Adaptor
Film: Ektachrome E200 (+1EV pushed)
Location: Ooizumi vil., Yamanashi pref.


3. Digital Camera(equivalent f=1600mm in 35mm film format)

Date & Time: Mar 8 2002, 18:55 to 19:04 JST(+0900), 4 images composed with 60sec. exposed
Mar 9 2002, 18:55 to 19:07 JST(+0900), 5 images composed with 60sec. exposed
Optical: TAKAHASHI 12.5cm(4.9") fluorite refractor, afocal method with LV25mm eyepiece
Synthesized focal length f=240mm (equivalent f=1600mm in 35mm film format)
Auto-guided with GOTO MX-II equatorial
Digital Camera: CASIO QV-2800UX
Location: Ooizumi vil., Yamanashi pref.

Camera settings: Mode...1600×1200 FINE
Lens...f=6.0mm (equivalent f=40mm in 35mm film format), stop: F3.2
CCD sensitivity...ISO320, White Balance...Daylight


In March of 2002, comet Ikeya-Zhang was brightened up to about 4th magnitude. I was favored with very clear evening sky in this two days, and can see the comet with naked eyes in lower western sky. The tail is stretched over 2 degrees toward east, splendid valiant figure of Ikeya-Zhang can be enjoyed through binocular and telescope.
And it can be see that there is a little change of extent of ion tail by comparing between these two days comet's images.


Ikeya-Zhang on Mar 16 2002
Ikeya-Zhang on Feb 23 2002

Copyright(c) 2002 by Naoyuki Kurita, All rights reserved.
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