[vsnet-obs 18152] Re: (fwd) SN1998es photometry and astrometry (Sala)

[Berto Monard <lagmonar@csir.co.za>]

Last night I had a visual glimpse of SN 1998es near the galaxy core.
Patient viewing at high magnifications did reveal the SN photons on
and off. I am not confident reporting my magnitude estimates but they
are well beyound 13.3V: my best guess would be 14.4 + or - 0.3 (and
off the record). The visual observations were done using a 25 cm f/4.5
Newtonian at about 160 x.

Regards,

Berto Monard
Pretoria

 
>>> Taichi Kato <tkato@kusastro.kyoto-u.ac.jp> 11/21/98 05:57AM >>>
(fwd) SN1998es photometry and astrometry (Sala)

From g.sala@skylink.it Sat Nov 21 03:24 JST 1998
Date: Fri, 20 Nov 1998 19:23:27 +0100
To: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
From: "Giuseppe A. Sala" <g.sala@skylink.it>
Subject: sn1998es brightness
Cc: Giovanni Anselmi <redaz@coelum.com>, Mirko Villi
<villi@supernovae.org>
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Dear Dr. Kato:

The attached Creport.txt file shows astrometric and photometric data
of
sn1998es CCD image taken on Nov 17.80895 UT at Promiod Observatory
with an
unfiltered and well calibrated 120sec CCD image (QE Peak at 520nm).
The m(V)=13.3 is surprisingly much lower than that one reported by
other
observers.
My CCD camera (Sony ICX083AL) is rather sensitive in UBV light.
USNO SA1.0 reference stars and Astrometrica program have been used. 
I would appreciate any comment. Many thanks in advance.

Best regards

Giuseppe A. Sala

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