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SBIG introduces the STX Guider ($999). This self-guiding accessory attaches to the front of the FW7-STX filter wheel, allowing you to choose faint guide stars by intercepting light from the optical path before it passes through the imaging filters. The unit incorporates a 0.7× telecompressor lens that focuses light onto a KAI-0340 CCD guide sensor with 7.4-micron pixels in a 640×480 array. The STX Guider also permits you to adjust the pick-off mirror and focus position independently of the imaging camera and lock them in place. Requires an additional ¾-inch of back focus in your telescope’s optical train.
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