WHT GHRIL Laboratory

• Mounting holes : The GHRIL optical table is 2500 mm long 1350 mm wide, with an array of M6 holes on 25 mm centres in its SS top surface. The table is mounted on three rigid legs (not vibration isolated) directly to the telescope fork adjacent to the altitude bearing.

• Maximum mass and moments: The table itself is extremely rigid and could support quite heavy instruments. However care should be exercised with point loads as the table top consists of an epoxied SS sheet which dents easily.

• Clearances and volumes: The position of the focal plane/optical axis has already been detailed. The full area of the table is available for instruments, although a major restriction is the position of the focus in the front corner of the table.