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- Focal plane position : 16mm onto the GHRIL optical table, and 451mm
behind the Nasmyth instrument rotator. 150mm abobe the GHRIL optical
table.
- Field size: At nominal focus, 3 arcmin unvignetted.
- Image quality: At nominal focus 0.5 arcsec over the 5 arcmin field.
- Image scale: At nominal focus, 4.44 arcsec/mm, 225 m arcsec.
- Throughput: Poor in the ultraviolet as it used silvered mirrors,
elsewhere 80%.
Tue Aug 15 16:42:46 BST 1995