The INSTLDSS packet lists the header items which define the state of LDSS-2. The header records should be as follows:
LDSMASK = CHAR / Name of aperture mask LDSFILTE= CHAR / Name of filter LDSGRISM= CHAR / Name of grism in beam LDSFOCUS= INTEGER / Camera focus (microns) LDSDOORS= CHAR / Status of access hatches LDSFRAT = REAL / F ratio of camera LDSSCALE= REAL / Plate scale (arcsec/mm) PAOFFSET= REAL / Slit p.a. - tel. p.a. (degs) PAOFFSET= REAL / Instrument p.a. - telescope p.a. (degs)