DA_406-20210418-S001-R001-B-030359.fts

Only less than 50 stars was detected

DA_406-20210418-S001-R001-I-030004.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2021-04-18 18:00:04 14.925 +/- 1.888 (3sigma) 14.418 +/- 1.891 (5sigma) 13.730 +/- 1.897 (10sigma)

DA_406-20210418-S001-R001-R-030127.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2021-04-18 18:01:28 16.273 +/- 1.431 (3sigma) 15.705 +/- 1.433 (5sigma) 14.933 +/- 1.438 (10sigma)

DA_406-20210418-S001-R001-V-030244.fts