B2_1520p31-20190313-S001-R001-B-041022.fts
Only less than 50 stars was detected


B2_1520p31-20190313-S001-R001-I-041407.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2019-03-13 19:14:08
16.404 +/- 1.998 (3sigma)
15.671 +/- 2.003 (5sigma)
14.677 +/- 2.013 (10sigma)


B2_1520p31-20190313-S001-R001-R-041253.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2019-03-13 19:12:54
16.884 +/- 2.744 (3sigma)
16.125 +/- 2.751 (5sigma)
15.096 +/- 2.765 (10sigma)


B2_1520p31-20190313-S001-R001-V-041139.fts