[vsnet-grb-info 353] (fwd) GRB 020813 (B. Monard)

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

(fwd) GRB 020813 (B. Monard)

Dear interested GRB observers,

A follow up observation of GRB020813 was made at the Bronberg
Observatory on the first possible night. Unfortunately, mediocre seeing
and possibly non optimum focus caused a slightly inferior image
quality.

The initial visual image study up to magnitude 19.0CR did not reveal
any new or light-enhanced object.
A deeper study of the image at the reported location of 194641-193842
showed a just detectable new object at the limit of the image
resolution.
>From comparisons with USNO-A2.0 and UCAC1 stars an estimated magnitude
of 20.0 CR + or - 0.5 was derived. The time was 020813.719 UT (19h18
LT).

observer: Berto Monard  MLF, Pretoria, South Africa
Bronberg observatory / CBA Pretoria
location: -25 54' 48", 2826' 44"E, altitude 1590m
instrumentation: LX200 12" f/4.2 with ST-7E unfiltered
conditions: clear / moderate seeing / stack of 13 exposures of 45 sec
each

reported CR magnitudes result from differential photometry to non-red
comparison stars with R magnitudes (directly or derived) from
published
photometric data or traceable to UCAC1 (comparison stars selected from
USNO-A2.0 data on the basis of non-red colour and reliability of the
data).

GRB020813   20020813.719   20.0CR

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp