現在亮度是北京說
但實際多亮??
還沒得到更正確資訊
UPDATE
from comet-ml
http://tech.groups.yahoo.com/group/comets-ml/message/22344===============
Re: [comets-ml] Comet ISON (C/2012 S1) From Pasadena CA
Posted By:
lams_astronomia
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Fri Nov 15, 2013 9:13 am |
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Hi
Request permission to publish your observation.
C/2012 S1 (ISON)
2013 Nov. 14.552 UT: m1=5.8, Dia.=1.25', DC=7; 7cm R (20x); Anthony Cook (Griffith Observatory, Pasadena, CA, USA)
We invite you to send us your reports of visual observations of comets, to publishing in Morris Format (or ICQ) on our website of Cometary Section of LIADA.
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Luis -
http://wp.me/PS5tw-bt________________________________________________
Luis Alberto Mansilla / COMETS WATCHERS
Coordinator of LIADA Cometary Section.
* The Iberoamerican Astronomical League *
"54 Years ... Semper Observandum"
Web:
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From: griffithobserver@...
Sent: Thursday, November 14, 2013 4:49 PM
To:
comets-ml@yahoogroups.comSubject: [comets-ml] Comet ISON (C/2012 S1) From Pasadena CA
I observed comet ISON from Pasadena, CA this morning, 16 minutes after the start of astronomical twilight, sun elevation -14.6Ëš. Scattered cirrus was present as was suburban light pollution. I used a 70mm refractor at 20X, timed the drift of the coma to measure the diameter, and used the Beyer method of magnitude estimation with TK reference stars
:
2013 Nov. 14.552 m1=5.8, Coma dia.=1.25' DC=7
The coma was circular and well defined, of a deep blue-green color and the central condensation was bright and nearly starlike. It resembled a circular planetary nebula around a central star as seen through a giant telescope.
The tail was not seen.
Yesterday (11-13-2013), ISON appeared ghostly in the same equipment. This morning, it appeared the same size, but bright and easy to see!
Anthony Cook
Astronomical Observer
Griffith Observatory