Orion X-Y Guidestar Finder with 1.25" Barrel

The Orion X-Y Guidestar Finder enables you to move the autoguider (or guiding eyepiece) around within the guide scope's focal plane, bringing more potential guide stars into view and speeding up the process of guide star acquisition. In fact, it obviates the need for adjustable tube rings altogether, eliminating a potential source of image-ruining flexure.

With the X-Y Guide Star Finder, you can use fixed tube rings for your guide scope instead - a much more secure configuration. Anyone who uses a separate guide scope in their imaging setup will benefit from the X-Y Guide Star Finder. Its precision X-Y fine-adjustment knobs provide lateral travel of up to 1.1 inches.

The unit's 1.25" barrel fits into the guide scope's focuser. An optional 2" barrel is also available (#5270), which allows a wider range of adjustment. The guide camera nosepiece or guiding eyepiece attaches via a 1.25" barrel with a thumbscrew lock. This is a mechanical adapter, made of machined, black-anodized aluminum; it does not contain any optics. It requires approximately 38mm of inward focus travel.