Compensated Circular Filter Mount: Manual, opposite sides

The compensated circular filter wheel mounts are designed to support and accurately position two oppositely rotating filter wheels. The filters rotate in a counter rotation direction to achieve an extended aperture of uniform density. The filters are mounted on a cushioned stainless steel hub that firmly grips each wheel. The filters can be rotated by a stepping motor or the mount can be supplied with a knob for manual rotation. The accuracy of rotation can be few minutes of a degree. The filter wheel must be ordered separately.

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