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- Mounting holes : The instrument mounting at INT prime focus,
known as the D``D--plate'',
attaches to the top of the corrector cell and has a cutout section to clear
the guide probe assembly. There are two existing D--plates, one for use with
the standard ING CCD cryostats (3 point kinematic mounting) and another
with a simple
photographic plateholder. Either of these could be used for user supplied
instruments, or alternatively a new D--plate made. Contact RGO staff for more
details.
- Maximum mass and moments: No more than a typical cryostat weight
of about 15 kg is allowed on the cryostat mounting.
- Clearances and volumes: To avoid vignetting and to ensure clearance
with the dome, instruments should be less than the 900 mm diameter of the
prime focus
assembly. The length should be less than 1500 mm.
Tue Aug 15 16:42:46 BST 1995