. MASTER telescope FOW (white rectangle), IPN error box and FERMI GBM 1 and 3 sigma statistical error boxes on the part of the Very Wide Field Camera image. Click for full camera image. MASTER telescope image with IPN error box and OT candidates position. Click for full telescope image. Optical transient candidate 1. MASTER image (left), DSSS image (center) and SDSSS (right) . Optical transient candidate 2. MASTER image (left), DSSS image (center) and SDSSS (right)