Mount :

Pointing accuracy ...

6 arc seconds p-p.

Receive optics :

Clear aperture ...

76.20-cm (30-inch) aperture,

f:5 telescope system,

f:1.5 primary mirror.

Optical losses ...

48% through coude transmit path.

Performance ...

Better than 80% energy in 5 arc seconds blur over a 5-milliradian field

Coude optics ...

Five independently adjustable mirrors allowing 10.16 cm (4-inch) clear aperture laser transmission from the clean room through the mount axes and toward the target. They are remotely adjustable about two axes and have a tilt resolution of better than 0.1 arc second.

Mirror parameters :

Flatness ...

1/10 Light wave at 532 nm.

Energy handling capability ...

1.25 Gigawatts (pulsed).

Coating ...

Volteccoating No. 500-119: (99.7% reflectivity @ 532 nm).

Mount physical parameters :

Maximum height ...

279.40 cm (110 in.) (telescope pointed to zenith).

Elevation axis ...

208.28 cm (82 in.).

Swing radius-azimuth ...

111.76 em (44 in.).

Swing radius-elevation ...

86.36 em (34 in.).

Weight ...

4082.33 kg (9000 Ibs).

Rotation limits ...

700 degrees in azimuth, :1:100 degrees in elevation. Electrical limits are incorporated to prevent lasing into the trailer structure.

Drives ...

Direct coupled de torque motors, 406.75 Nm (300ft-Ib) for azimuth and 100.33 (74 ft-Ib) for elevation.

Servo :

Azimuth axis velocity ...

20 degrees/see.

Elevation axis velocity ...

5 degrees/see.

Azimuth axis acceleration ...

5 degrees/sec².

Elevation axis acceleration ...

3 degrees/sec².

Minimum velocity ...

0.001 degrees/see.

Readout system ...

21-bit binary with 0.6 arcsecond rms accuracy.