TITLE: GCN CIRCULAR NUMBER: 11819 SUBJECT: GRB 101225A: revised analysis of narrow band imaging DATE: 11/03/22 19:16:23 GMT FROM: Nial Tanvir at U.Leicester N. R. Tanvir (U. Leicester) and A. J. Levan (U. Warwick) report: We have re-reduced and re-analysed more thoroughly the imaging reported in GCN 11642. While it remains the case that the optical transient is detected in the H-alpha narrow-band filter, and at best marginally present in the r-band, the significance of the excess H-alpha detection is reduced.  Within the associated errors the revised photometry is broadly consistent with the red colour of the transient at this time (the narrow-band filter being somewhat redward of the central wavelength of the r-band filter), and hence, the data do not require significant line emission. This argument for a z~0 origin is therefore weakened.