Diffraction Spikes Bahtinov Focusing Mask
49,00 €Bahtinov focusing mask that also generates aesthetic diffraction spikes on bright stars. Combines precise focus with visual appeal.
Showing 49–72 of 143 results
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Dot Sight Finder
85,00 €Finding objects in the sky has never been easier! Just look through the Dot Sight Finder with one eye while keeping the other open, and you’ll see one of four selectable LED shapes projected onto the
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Dr. Flat Master (0.8x Reducer)
845,00 €The William Optics Dr. Flat Master is an apochromatic triplet reducer/flattener designed for 12″ – 16″ WO and GSO Ritchey-Chrétien telescopes. It reduces the focal length by 0.8x and flattens the fiel
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Dual side Dovetail Plate
49,00 €Dual-profile dovetail plate with Vixen on one side and Losmandy on the other. One plate, two standards — works with any saddle.
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FLAT GT
258,00 €Dedicated field flattener for the William Optics Gran Turismo series APO refractors. Sharp stars from center to corner across the entire sensor.
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Flat4 Draw Tube Adapter
64,00 €Adapter connecting William Optics Flat4 Petzval reducers to WO focuser draw tubes with correct mechanical spacing.
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Flat61A Adjustable field flattener
274,00 €Adjustable Flattener is made for use with the ZenithStar 61 telescope. It features a 45mm image circle for use with sensors as large as full frame, while also retaining your ZenithStar 61’s native foc
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FLAT68III longer adjusting adapter for WIFD GT81-M54
47,00 €Male thread: M54x0.75 Female Thread: M80x0.75 Length: 54mm To use this adapter, unscrew the original end adapter that terminates in the M48 male thread on the flattener and replace it with this longer
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Flat6AIII 0.8x Reducer/Flattener
274,00 €William Optics Flat6AIII 0.8x Reducer/Flattener This very elegant 2″ reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics F/6 to F7.5 ratio APO re
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Flattener adapter for FLT91
85,00 €The William Optics M80 to M48 Flattener adapter lets you use the Flat68III flattener with the Fluorostar 91, or the Flat7A flattener with the Fluorostar 120. This adapter takes the place of the origin
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FLT-91 f/5.9 APO (GOLD)
3 030,50 €The FLT 91 is the perfect Apochromatic refractor for visual and photographic astronomers demanding excellence in a midsize telescope. The three-element optical design features a 91mm aperture using FP
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FLT-91 f/5.9 APO (RED)
2 175,00 €The FLT 91 is the perfect Apochromatic refractor for visual and photographic astronomers demanding excellence in a midsize telescope. The three-element optical design features a 91mm aperture using FP
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Fluorostar 120
3 298,00 €A precision-crafted apochromatic refractor designed to meet the exacting demands of modern astrophotographers. With a 120mm aperture and a 780mm focal length (f/6.5), this telescope is optimized for b
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Fluorostar 132
4 378,00 €A top-tier apochromatic refractor telescope designed for both deep-sky astrophotography and detailed planetary observations. With a 132mm aperture and a 910mm focal length, this telescope boasts a tri
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Fluorostar 156
7 398,00 €A premium apochromatic refractor designed for both avid stargazers and serious astrophotographers. This telescope features a 156mm aperture and a 1217mm focal length (f/7.8), engineered for precision
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Focuser for RC Telescope
806,00 €The William Optics R&P33 Focuser is a premium dual-speed focuser designed for 12-16″ WO and GSO RC telescopes. Featuring ultra-smooth fine focus control and high load-bearing capacity, it ensures
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FUJI FX M48
65,00 €Use this adapter for attaching a DSLR camera to various William Optics scopes and flatteners.
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Gran Turismo 71
1 130,00 €William Optics GT-71 apochromatic triplet lens telescope is equipped with three-element Ohara FPL-53 glass with excellent color correction. The telescope features a new improved two-speed 2.5 “Rack ‘n
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Gran-Turismo 71
933,00 €Elevate your astrophotography with the William Optics Gran Turismo 71, a compact yet powerful triplet APO refractor. Featuring advanced FPL-53 glass for exceptional color correction and clarity, this
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Gran-Turismo 81 IV
1 568,00 €Discover precision astrophotography with the compact and powerful Gran Turismo 81 IV f/5.9 APO Triplet Refractor. Equipped with a high-quality FPL-53 triplet lens for exceptional clarity and color cor
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Gran-Turismo 81 WIFD
1 890,00 €Unveil the mysteries of the night sky with the William Optics Gran Turismo 81 WIFD, a superb refractor telescope designed for discerning astronomers who demand high-quality optics and robust build qua
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GuideStar 61 Guide Scope (gold color)
569,00 €William Optics Guide Star 61 lens is made with FPL-53. It provides excellent optical performance and sharp stars. GS61 has 360mm focal length. With optional accessory, GS61 is also suitable for astrop
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Guiding Scope 50mm f/4.0
189,05 €Explore the night sky with precision using the William Optics 50mm f/4.0 Guide Scope, designed for astrophotographers who seek to capture detailed long-exposure images. This guide scope features a 50m
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Handle Bar for CAT 51
53,00 €Handle bar for the William Optics Cat 51 telescope. Convenient carrying grip that doubles as a mounting rail for guide cameras and accessories.