Mrk_421-20230104-S001-R001-B-035531.fts
No WCS
Mrk_421-20230104-S001-R001-I-035911.fts
Only less than 50 stars was detected
Mrk_421-20230104-S001-R001-R-035759.fts
No WCS
Mrk_421-20230104-S001-R001-V-035646.fts
No WCS