William Optics
William Optics Slide-Base UniGuide 32mm Sc... $129.95
The 32 mm UniGuide guide scope from William Optics has a focal length of 120 mm and a focal ratio of f/3.75. The guide scope comes with a Vixen-style slide-base. This base is compatible with the William Optics saddle carry handle and the Cat Handle bar (neither handles are included). The back of the William Optics 32mm UniGuide scope comes with an M42 thread for attaching 1.25" cylindrical-type guide cameras such as QHY, SBIG, and ZWO cameras. Tightening knobs will ensure a stable fit for the attached guiding equipment. The WO UniGuide guide scope has a full length of 147...
William Optics
William Optics RedCat 51 II APO Petzval OT... $1,049.95
Designed to be the best, affordable, small, lightweight and fast Apochromatic refactor for astrophotography. The unique optical design includes the highest quality glass for the best possible color correction and flat large image circle. The result is a 51 mm objective lens, in a sleek Petzval design, for a full-frame image. Details and Features Optical Design - 51 mm lens, in a sleek Petzval design, using Synthetic Fluoride (FPL53 and FPL51) glass for a full-frame flat field image. The optical quality provides exceptional performance at a fast focal ratio of f/4.9. The Limited Edition RedCat 51 Upgrade will out resolve...
William Optics
William Optics ZenithStar 81 Doublet APO (... from $1,124.95
The William Optics telescope package is fit for incredible and successful imaging sessions! If you have been looking for the ultimate William Optics viewing experience, you have found it! The 81mm ZenithStar APO refractor from William Optics is a great addition to the ranks of telescopes that are devoted to providing fantastic astro-images through high-quality optics and chromatic aberration correction. Not only does the Z81 telescope have good optics, but it's also easy to use and very portable! Equipped with FPL-53 glass, this apochromatic refractor provides beautiful colors and clear details. Z81 telescopes have an image circle that works well...
William Optics
William Optics RedCat 71 APO Petzval OTA (... $2,149.95
The WO Cat71 is a 71-mm f/4.9 refractor using a Petzval design with a doublet front element incorporating FPL-53 glass, plus a single central element and a single rear lens. By this design, our WO Cat71 provides a flat image plane without any additional flattener and the image circle is over 45mm. WO Cat71 is designed primarily for imaging, making it an astrograph. This scope provides an excellent colour correction and pinpoint stars at the very edge of a 45mm image circle. If you want to take images with the best quality, this beautiful and powerful telescope is what you...
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William Optics
William Optics Fluorostar 120 APO Triplet ... $4,299.95
The William Optics FluoroStar 120 Refractor is an air-spaced triplet APO. Using three elements made of high-end fully coated glass like FPL-53 virtually removes chromatic aberration and produces images that are sharp and full of contrast. A patented light weight Bahtinov mask is included to provide assistance in focusing, or you can remove it when using the F120 visually. The FLT120 has a native focal ratio of f/6.5 and a focal length of 780 mm. The big 3.3" rack and pinion dual-speed focuser allows for use of two optional M92 flatteners from William Optics; the FLAT68III, which flattens the field...
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William Optics
William Optics Fluorostar 132 APO Triplet ... from $5,499.95
The William Optics FLT 132 APO Telescope is a high quality Apochromatic Imaging and visual use telescope with an aperture of 132 mm and a focal length of 910 mm for an f-ratio of f/6.9. This FLT 132 APO Telescope from William Optics can be used with a camera mounting system, with various T-mounts for cameras (not included), or equally well as a visual observing instrument. This model is provided in a Gold color. Features a top-quality triplet air-spaced objective, designed by a leading designer with FPL-53 glass. The telescope utilizes precision optics with STM coatings. This FLT 132 APO...
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William Optics
William Optics Fluorostar 156 APO Triplet ... from $8,599.95
The William Optics Fluorostar 156 APO OTA is a high quality Apochromatic Imaging and visual use OTA with an aperture of 156 mm and a focal length of 1217 mm or an f-ratio of f/7.8. This Fluorostar 156 APO OTA can also be used with an interchangable camera mounting system, with various T-mounts for cameras (not included). The William Optics FLT 156 Triplet Fluorostar OTA utilizes a steel objective cell for its 156 mm lens. This steel cell has proven to be less subject to pinching the objective due to changes in ambient temperature when compared with a large aluminum...
William Optics
William Optics Fluorostar 91 APO Triplet O... $2,549.95
Astronomers desirous of superb visual and photographic intermediate sized refractor performance will much appreciate the William Optics 91 mm f/5.9 Fluorostar. The FLT 91 employs FPL-53 glass and has an optical design consisting of three elements. ln addition, with STM-coatings enabling superb optical performance, the FLT 91 provides excellent quality that is tough to match. Details and Features RotoLock Adapter - A dependably effective 2" William Optics diagonal or accessory to FLT91 connection is provided by the RotoLock 2" adapter. Bahtinov Mask - Uncover William Optics' patented Bahtinov Mask by detaching the face plate from the retractable dew shield lens...
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William Optics
William Optics Gran Turismo 81 IV Triplet ... $1,999.95
The William Optics Gran Turismo 81 Imaging APO Telescope is a high quality Apochromatic Imaging optical telescope with an aperture of 81 mm and a focal length of 478 mm or an f-ratio of f/5.9, without the optional Reducer/Flattener. If you wish to take great astro-images with a high quality APO refractor, this William Optics Gran Turismo 81 Imaging APO telescope is a good way to obtain your goal. Its FPL-53 glass APO design provides images with extreme sharpness, clear details, great color, with APO grade color correction. Introducing a first innovative feature in the industry: Now this Gran Turismo...
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William Optics
William Optics Gran Turismo 71 Triplet APO... from $1,219.95
The stunning Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. From the pristine white finish on the CNC tube to the elegant red or gold trim, this telescope has more than just good looks: The new GT71 features a 3-element objective using high-quality FPL-53 extra low dispersion glass that reduces any secondary spectrum to an unbelievable degree. The Gran Turismo series of telescopes have a three-element lens with ED glass (FPL-53) in the centre. This special glass ensures an image that is virtually free from colour errors. These telescopes therefore belong to the class of...
William Optics
William Optics ZenithStar 73 Doublet APO (... $899.95
Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. The image is crisp, sharp and colour aberration free thanks to the use of top quality glass — FPL53, closely matching the legendary fluorite material. The 43mm image circle when Flat73 is used covers full frame size sensor nicely. Details and Features 2.5" R&P Focuser - The 2.5" R&P focuser is smooth, stable, and reliable. No image shifting! CNC Handle Bar - CNC-made Handle Bar with...
William Optics
William Optics ZenithStar 61II Doublet APO... $749.95
This William Optics ZenithStar 61mm APO refractor with WO Bahtinov mask cover provides more portability and utility than any telescope ever offered by William Optics. The refractor uses FPL-53 glass to produce sharp images for astrophotography or wildlife photography. Still maintaining a portability that makes this telescope a great grab-and-go tool, the Z61 refractor gives a high power performance both visually and, when paired with the P-FLAT61R (not included), for lunar photography. The ZenithStar 61 is a great instrument you'll be able to appreciate for several years to come! The William Optics Z61 objective lens uses FPL-53 glass has ED...

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