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Date: Wed, 29 May 2002 10:35:18 -0300 (ART)
From: <costeira1@yahoo.com>
Subject: R Cas and CCD profile
Hello friends,
I read the CCD SONY ICX083/AL instructions
(http://www.sel.sony.com/semi/PDF/ICX083AL.pdf). This device was used
by Korneev in April 11-12 R Cas image (reported by Dr Denissenko).
The ICX083AL is an interline CCD solid-state image sensor suitable
for CCIR black-and-white video cameras with a diagonal 11mm (Type
2/3) system. In page 12 there is the sensibility curve for this
device. That's profile:
wave lenght (nm) relative sensibility
500 ~1.0
600 0.8
700 ~0.4
800 ~0.2
900 ~0.1
1000 ~0.0
How this can be correlate with CCD sensibility for red stars like
R Cas? Is Bolometric magnitude inside?
[]s do Alex!
--- Taichi Kato <tkato@kusastro.kyoto-u.ac.jp> escreveu: > Re: (fwd)
R Cas and Comet Ikeya-Zhang
>
> > Is this not caused by the extreme red color of R Cas in the
> > unfiltered CCD? Or am I missing something here? The star is
> > R ~5.5 when V is ~10 (see Kornilov et al. 1991TrSht..63....4K),
> > so the observation seems to be about as expected.
>
> Past MISAO observations (unfiltered CCD) indeed reported mag ~5
> when
> V is ~10. At maximum, MISAO observations reported mag around 3.
=====
********* Alexandre Amorim ***********
* Estacao Costeira1 *
* Florianopolis/SC *
* email: costeira1@yahoo.com *
* http://www.geocities.com/costeira1 *
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