Mrk_501-20201030-S001-R001-B-195219.fts
No WCS


Mrk_501-20201030-S001-R001-I-195620.fts
Only less than 50 stars was detected


Mrk_501-20201030-S001-R001-R-195502.fts
Only less than 50 stars was detected


Mrk_501-20201030-S001-R001-V-195337.fts
Only less than 50 stars was detected