Value: One of
'CCD1' (in StanCam),
'CCD4' (in HiRAC) or
'CCD7' (in ALFOSC).

Commentfield: One of
Tektronic 1kx1k (StanCam),
Loral2kx2k W14-2 (HiRAC) or
Loral2kx2k W19-(0,0) (ALFOSC).