Comet
Ikeya-Zhang, which last visited the inner solar system in 1661,
swung by the Sun on March 18, 2002. It is now glowing like a 3rd
magnitude star -- albeit with a long, beautiful tail. This month
the comet will move from the evening sky, where it is visible just after
sunset, to the morning sky. Ikeya-Zhang's faint blue color and turbulent
tail have made it one of the most photogenic comets in years.
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Unless
otherwise stated, all images are copyrighted by the photographers.
|
Photographer, Location,
Date |
Larger images |
Comments |
|
David
Moore,
April 18
|
#1 |
David Moore sent this image of Comet
Ikeya-Zhang with a Topcon Camera and 400 speed film. The image
represents an 8-10 second exposure. |
|
Charles
Kiesel,
Fort Branch, IN
April 10,
15 |
#1,
#2
|
Charles Kiesel: "The April
10th photo was taken with a 135mm lens and a 15 second exposure
time. The April 15th photo was taken with a 200mm lens and about
a 1-2 minute exposure time. Both were taken with some light pollution
and thin haze." |
|
Dr.
P Clay Sherrod,
Arkansas
April 15 |
#1 |
Clay Sherrod: "The comet is
fading! Although visible low on the northeast horizon this morning
to the naked eye, I gave it a magnitude 3.9 with only about a
4 degree tail. Note the very nice spike coming from the coma,
or head, which was quite obvious in binoculars." |
|
John
E Cordiale,
UK
April 12 |
#1,
#2
|
John Codiale gathered much data
in these impressive two images, which include spectral analysis.
Obtaining spectra helps us to determine the actual composition
of the comet. |
|
Dr.
P Clay Sherrod,
Arkansas
April 18 |
#1 |
Clay Sherrod: "Ikeya Zhang,
although rising substantially higher in the NE morning sky, is
now showing signs of fading rapidly. This image was captured just
minutes before the light of dawn and after the clearing of high
cirrus clouds. The comet's magnitude in binoculars was estimated
at 4.3 magnitude, just visible to the naked eye, and down almost
one-half magnitude since April 12." |
|
Chris
Schur,
Payson, Arizona
April 14 |
#1 |
Chris Schur captured this beautiful
image of Ikeya-Zhang's deep green coma. He exposed his film for
15 minutes with each color filter (RGB), then stacked the exposures. |
|
Tom
Teters,
Northern Colorado
April 13 |
#1,
#2 |
Tom Teters sent us these two 11-second
exposures of the comet moving across a cloudy sky. He used an
80mm Stellarvue refracting telescope. |
|
Jimmy
Westlake,
Yampa, CO
April 12 |
#1,
#2,
#3 |
Jimmy Westlake: "Three new
images of Comet I-Z taken the morning of April 12, 2002 from the
Flat Top Mountains near Yampa, CO, elevation 9000 ft. What the
comet is losing in brightness, it seems to be gaining in detail
as it closes in on Earth." |
|
Dominic
Cantin,
Quebec, Canda
April 12 |
#1 |
Great detail is visible in this
beautiful image of Comet Ikeya-Zhang by Dominic Cantin. He used
an 8-inch schmidt-camera @ f/1.5 with Fuji 800 film. The image
consists of three stacked five-minute exposures. |
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