VTAS Nonmagnetic Head Tracker Accuracy Station

The first requirement of this Visual Target Acquistion System (VTAS) device is magnetic transparency. Linen phenolic and epoxy are used to fabricate the main frame. The x, y, and z "ways" are optically polished glass, straight within 10 arc-seconds.

Magnetic Head Tracker Accuracy Station: Photo 1

Kinematically constrained ceramic ball spindles provide arc-second accuracy after 18 years of service.

Magnetic Head Tracker Accuracy Station: Photo 2

Magnetic Head Tracker Accuracy Station: Photo 3

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