TITLE: GCN CIRCULAR NUMBER: 5808 SUBJECT: GRB061110B: Optical observations at Crni Vrh DATE: 06/11/11 02:15:09 GMT FROM: Herman Mikuz at OCV H. Mikuz on behalf of PIKA observing program at Crni Vrh Observatory reports: We imaged the field of GRB 061110B (SWIFT trigger 238174) with the 60 cm robotic telescope at Crni Vrh Observatory, Slovenia. Due to the object low altitude (16 degrees) and presence of some cirrus clouds, only three 90 second exposures in R filter were secured, starting 44 s after the trigger was received. Exposure start times (in UT) are 22:09:46, 22:15:19 and 22:20:52. No variable object was detected down to a limiting R magnitude 17.2 on single 90 s exposures, nor on three 90 s co-added exposures with R limiting magnitude 17.8. Magnitudes were estimated with the nearby USNO A2 stars.