OJ_287-20210407-S001-R001-B-222233.fts

Only less than 50 stars was detected

OJ_287-20210407-S001-R001-I-222626.fts

relative photometry graph from USNO-B1 catalog

Date UT magnitude mag_erorr 2021-04-07 13:26:27 17.16 0.107

OJ_287-20210407-S001-R001-R-222509.fts

relative photometry graph from USNO-B1 catalog

Date UT magnitude mag_erorr 2021-04-07 13:25:10 15.25 0.073

OJ_287-20210407-S001-R001-V-222353.fts

Only less than 50 stars was detected