TITLE: GCN CIRCULAR NUMBER: 20262 SUBJECT: GRB 161214B: Chante-perdrix observatory optical observations DATE: 16/12/14 23:41:41 GMT FROM: Alain Klotz at IRAP-CNRS-OMP Kugel F. (Chante-perdrix observatory) report: We imaged the field of GRB 161214B detected by SWIFT (trigger 726885) with a 400 mm telescope (F/D=3) located at the Chante-perdrix observatory, France (IAU A77). The CCD camera is an Atik 460EX unfiltered. We detect the same star as Malesani et al. (GCNC 20260). A first series images show the star 0.7 magnitude brighter than measured in later images: t0 + 8.1 min to t0 + 20.1 min : R = 17.2 +/- 0.3 t0 + 106.6 min to t0 + 128.6 min : R = 17.9 +/- 0.3 t0 + 131.1 min to t0 + 153.1 min : R = 17.9 +/- 0.3 Magnitudes were estimated with the nearby USNO-SA stars and are not corrected for galactic dust extinction.