TITLE: GCN CIRCULAR NUMBER: 5933 SUBJECT: GRB 061217: optical observations at Calar Alto DATE: 06/12/17 15:00:32 GMT FROM: Martin Jelinek at Inst.Astrophys.Andalucia,Granada M. Jelínek, A. J. Castro-Tirado (IAA-CSIC, Granada), J. Aceituno, A. Guijarro (CAHA, Almería), A. Monreal (AIP Potsdam), J. Alfonso (CSIC Madrid), A. de Ugarte Postigo and J. Gorosabel (IAA-CSIC), on behalf of a larger collaboration, report: "Following the detection by SWIFT of the short-duration GRB 061217 (Barthelmy et al. GCNC 5926, Parsons et al. GCNC 5930), we have obtained BVR images at the 3.5m telescope (+PMAS) at the German-Spanish Calar Alto Observatory. They were taken starting on Dec 17.1796 UT (i.e. 38 min post-burst), under good seeing conditions (1".0). The co-added frames (360s in R) starting 70 min after the event do not reveal any new sources within the 4".7 radius of the Swift/XRT position (Evans et al., GCN 5932) when comparing to the DSS-2 red. There may be an R=22.1 faint object at the 3-sigma level, at coordinates (J2000) 10:41:38.22 -21:07:35.13 +-0.5''. Further observations are planned." This message can be quoted.