TITLE: GCN CIRCULAR NUMBER: 6131 SUBJECT: GRB070223: MASTER-VWF-Kislovodsk observations DATE: 07/02/23 12:42:11 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, N.Shatskiy, E.Gorbovskoy, A.Belinski, D.Kuvshinov, N.Tyurina, P.Gritsyk Sternberg Astronomical Institute, Moscow Union 'Optic' A. Tlatov, I.Golubov Kislovodsk Solar Station of the Pulkovo observatory MASTER Very Wide Field Camera located at Kislovodsk Solar Station (http://observ.pereplet.ru, D=70 mm, 420 square degrees, 11 Mpixel's CCD) has moved to the Swift-BAT trigger 261664 and it has taken a series of 5s exposures starting 1 s after notice arrivel time at 01:23:11.719 UT under good weather condition and yang moon. We note that the GBR position (L. Vetere et al. GCN Circ No. 6125) was at 5 degrees outside of the our field of view. We note that the VWF camera continuously takes frames during the night. These unfiltered images are calibrated relative to USNO A2.0 (R). There is no OT was found inside Swift error box. T-Tgrb Mean Time Limit Coadd? Note 491s 493.5s 11.0 no slightly moving 496s 498.5s 11.5 no 496s 521 s 12.5 10 496s 586 s 13.0 36 The message can be cited. mailto: lipunov@sai.msu.ru