OJ_248-20181220-S001-R001-B-045538.fts

Only less than 50 stars was detected

OJ_248-20181220-S001-R001-I-045147.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2018-12-20 19:51:48 16.527 +/- 0.874 (3sigma) 15.865 +/- 0.876 (5sigma) 14.967 +/- 0.879 (10sigma)

OJ_248-20181220-S001-R001-R-045310.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2018-12-20 19:53:11 16.622 +/- 0.969 (3sigma) 16.001 +/- 0.971 (5sigma) 15.158 +/- 0.975 (10sigma)

OJ_248-20181220-S001-R001-V-045424.fts