OJ_248-20210118-S001-R001-B-003224.fts

Only less than 50 stars was detected

OJ_248-20210118-S001-R001-I-002835.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2021-01-18 15:28:36 15.938 +/- 1.373 (3sigma) 15.319 +/- 1.376 (5sigma) 14.478 +/- 1.381 (10sigma)

OJ_248-20210118-S001-R001-R-002951.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2021-01-18 15:29:52 16.025 +/- 1.705 (3sigma) 15.412 +/- 1.708 (5sigma) 14.579 +/- 1.715 (10sigma)

OJ_248-20210118-S001-R001-V-003108.fts