exptime exptime
darktime darktime
subset none 
biassec biassec
trimsec datasec
imagetyp imagetyp

'OBJECT'	        object
'COMPARISON'        	other
'BIAS'	                zero
'DOME FLAT'	        flat
'PROJECTOR FLAT'	flat

fixpix bp-flag 0
overscan bt-flag 0
zerocor bi-flag 0
darkcor dk-flag 0
flatcor ff-flag 0
fringcor fr-flag 0