Mrk_501-20200903-S001-R001-B-223952.fts
No WCS


Mrk_501-20200903-S001-R001-I-224350.fts
Only less than 50 stars was detected


Mrk_501-20200903-S001-R001-R-224233.fts
Only less than 50 stars was detected


Mrk_501-20200903-S001-R001-V-224108.fts
Only less than 50 stars was detected