4C_50o11-20210220-S001-R001-B-212533.fts

Only less than 50 stars was detected

4C_50o11-20210220-S001-R001-I-212922.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2021-02-20 12:29:23 17.446 +/- 6.537 (3sigma) 15.875 +/- 6.606 (5sigma) 13.745 +/- 6.740 (10sigma)

4C_50o11-20210220-S001-R001-R-212806.fts

Only less than 50 stars was detected

4C_50o11-20210220-S001-R001-V-212651.fts

No WCS