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Date: Thu, 22 Apr 93 12:57:26 JST
From: Hitoshi Yamaoka <g78261a@kyu-cc.cc.kyushu-u.ac.jp>
Subject: visual estimate
Newsgroups: sci.astro
From: kgrossha@radford.vak12ed.edu (Kurt Grosshans)
Subject: Obser. SN1993J
Organization: Virginia's Public Education Network (Radford)
Date: Mon, 19 Apr 93 02:26:13 GMT
Coulter 8":
Time: 2130 (local)
I am no professional and I am not experienced in estimating
magnitude but it appears to me as though the SN is getting
brighter. For what it is worth, I would estimate the magnitude
to be equal to that of star A and slightly brighter than star B.
...
.....
..... <--- M81
.....
...
A * * SNe
B *
I seem to recall reading somewhere that A and B are of equal
magnitude. If this is the case, I don't know what the heck I
was looking at!
---
Kurt
-------------------------
From: Kurt Grosshans <kgrossha@radford.vak12ed.edu>
Message-ID: <vsnet-history807@hoge.baba.hajime.jp>
Subject: Re: Obser. SN1993J
To: Hitoshi Yamaoka <g78261a@kyu-cc.cc.kyushu-u.ac.jp>
Date: Wed, 21 Apr 93 21:56:56 EDT
In-Reply-To: <9304191350.AA16384@kyu-cc.cc.kyushu-u.ac.jp>; from "Hitoshi Yamaoka" at Apr 19, 93 10:50 pm
X-Mailer: PENELM [version 2.3.1 PL11]
Status: R
>
> Recent photometry (T. Kato, private communication) tells us that
> A = 11.40 and B = 11.90 in Johnson V system (nearly equal to visual
> estimate). Then your observation shows that SN was 11.4 mag..
>
> # SNe(supernovae) is a plural form of SN(supernova). It is a Latin word.
>
> Mr. Kato and I are making light curves using numerous observations
> from all over the world, like Prof. Branslo, Norway. Could we add
> your data to our light curves? If you agree, can you notice me
> when you observed (I think you did not write what day you observed...,
> and we do not know how early or late your local time is from GMT.)?
> If you do not wish to, please notice it also.
>
I had made those observations on the evening of my original
posting which I believe was Sunday April 17th at 2130 + 5 hrs
(GMT)
You may certainly use my observations but please keep in mind I
am a rank amateur.
BTW- Great to "hear" from Japan! If you happen to know of any
young students who would like to correspond via email with my
astronomy students or advanced chemistry students, please let
me know.
Thanks
Kurt
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