GRB 030416
GCN Circular 2154
Subject
MASTER:optical observations GRB030416
Date
2003-04-19T10:11:01Z (22 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
V. Lipunov, A. Krylov, V. Kornilov, A.M. Kuznetsov, V. Amirhanyan, G.
Borisov, A. Belinski, D. Kuvshinov, S. Potanin, V. Vitrischak
Sternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow
report:
The error box of GRB030416 (HETE Ground Analysis, TRIGGER_NUM:10897) was
observed with MASTER system (280mm, http://observ.pereplet.ru). We
obtained 25 measurements in R filter. Our observations started at Apr 17,
17h56m37s UT (33 hours after the GRB) and had been lasting for 4.0 hours
up to Apr 17, 21h57m17s UT (37 hours after the GRB).
We had very poor transparancy and full Moon at all time, so flux
measurements uncertanities were quite big.
There is no OT brighter that 15.0 (R-band) in error box.
Our fts available at:
http://observ.pereplet.ru/images/GRB030416/
This message may be cited.
GCN Circular 2250
Subject
GRB 030416: Optical Observations
Date
2003-05-27T15:19:05Z (22 years ago)
From
Jane Moran at U.North Carolina <moranj@physics.unc.edu>
A. Henden, J. Silvay, J. Moran, R. Soule, D. Reichart, J. Schaefer, R.
Canterna, and B. Scoggins report on behalf of the USNO, UWYO, and UNC GRB
teams of the FUN GRB collaboration:
We observed the entire 14 arcminute diameter error circle of XRF 030416
(Jernigan et al., GCN 2209) in BVRcIc beginning 15.4 hours after the burst,
despite a bright moon. We report the following limiting magnitudes:
Start Start Time Filter Integration Limiting Telescope Calibration
Date Since GRB Time (sec) Magnitude Catalog
(hours) x Pointings (3 sigma)
Apr 17.103 15.391 Rc 6000 x 1 19.8 0.6-m RBO* USNO A2.0
Apr 17.143 16.361 B 300 x 1 20.1 1.3-m USNO USNO A2.0
Apr 17.149 16.502 V 300 x 1 20.9 1.3-m USNO ACT
Apr 17.155 16.643 Rc 300 x 1 20.4 1.3-m USNO USNO A2.0
Apr 17.160 16.784 Ic 300 x 1 19.9 1.3-m USNO USNO B1.0
Apr 20.143 88.454 Rc 2160 x 1 22.3 1.3-m USNO USNO A2.0
* RBO = Red Buttes Observatory
Using the image subtraction routine ISIS2 (Alard 2000, A&AS, 114, 363), we
find no transient sources in either of our Rc images of April 17th when
compared to our Rc image of April 20th.