Mrk_501-20210502-S001-R001-B-015956.fts

Only less than 50 stars was detected

Mrk_501-20210502-S001-R001-I-020348.fts

relative photometry graph from USNO-B1 catalog

Date UT magnitude mag_erorr 2021-05-02 17:03:49 14.57 0.018

Mrk_501-20210502-S001-R001-R-020232.fts

relative photometry graph from USNO-B1 catalog

Date UT magnitude mag_erorr 2021-05-02 17:02:33 13.73 0.026

Mrk_501-20210502-S001-R001-V-020115.fts

Only less than 50 stars was detected