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GCN Circular 371

Subject
GRB 990704 Optical Observations
Date
1999-07-05T23:18:50Z (25 years ago)
From
Jens Hjorth at U.Copenhagen <jens@astro.ku.dk>
GRB 990704 Optical Observations 

B. L. Jensen, J. Hjorth, H. Pedersen (Copenhagen), 
T. Abbott, L. Freyhammer, M. I. Andersen, J. W. Clasen (NOT),
P. Muhli (Helsinki), and A. O. Jaunsen (Oslo), report: 

"On 4.92 July and 5.92 July 1999 UT we obtained R band images (FWHM = 0.9") 
with the 2.5-m Nordic Optical Telescope (NOT), covering the BeppoSAX 1.7' NFI 
error circle of GRB 990704 (GCN #364). We find no variable objects down to a 
limiting magnitude of R ~ 22.5 inside or near the error circle. The object 
noted in GCN #363 (located outside the NFI error circle) has not varied 
between the two epochs of observation (cf. GCN #369, 370)."
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