William Optcis

The William Optics Gran Turismo 81 Triplet is designed to deliver incredible image quality in a compact package. Sitting at a respectable ratio of f/5.9, this FPL53 triplet is well-balanced in light-gathering power.

The 3.3" William Optics Rack & Pinion RC Focuser is made to work with GSO Ritchey-Chrétien telescopes. This type of focuser is compatible with Apertura RC telescopes as well!

On the telescope side of the focuser, you will find a large flange to connect the focuser to the OTA. This flange also works as a spacer, providing more space if you would like to add a user supplied filter wheel and/or Off-Axis Guider (OAG).

The body

This 0.8x Reducer/Field Flattener from William Optics is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes

The 32 mm UniGuide Scope from William Optics is a beautifully designed guide scope that matches perfectly with other William Optics refractors and accessories.

The William Optics ZenithStar61 Upgrade Mounting Rings and CAT Handle Bar are designed to work with the ZenithStar 61 refractor. This is a great upgrade to your William Optics ZenithStar 61!