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- Mounting holes: On the instrument turntable, 12
M10 holes on 457 mm
PCD are provided. On the general purpose A&G unit, 12 
M10 holes on 457 mm
PCD are provided plus 12 
M10 holes on 362 mm PCD. The acquisition TV axis
bisects the mounting hole pattern. The CCD A&G unit requires a three point ball
ended screw mounting with a PCD of 230 mm.
- Maximum mass and moments: On the instrument turntable, the
maximum mass is 270 kg, and the maximum moment is 95 kg m.
On the general purpose A&G unit face, the maximum mass is 250
kg and the maximum moment is 90 kg m. The CCD mounting should not be used with
anything heavier than a CCD cryostat (i.e. 15 kg).
- Clearances and volumes: Instruments should not exceed a volume defined
by the 1200 mm diameter of the mirror cell and a distance of 1200 mm behind the
instrument rotator face (to clear the telescope pier).
Tue Aug 15 16:42:46 BST 1995