Mrk_501-20201122-S001-R001-B-173520.fts
No WCS


Mrk_501-20201122-S001-R001-I-173918.fts
No WCS


Mrk_501-20201122-S001-R001-R-173801.fts
Only less than 50 stars was detected


Mrk_501-20201122-S001-R001-V-173637.fts
Only less than 50 stars was detected