90mm Mounting Rings
148,00 €Pair of 90mm mounting rings for telescopes with 90mm tube diameter. Padded interior with dovetail plate attachment for equatorial mounts.
Showing 25–48 of 131 results
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Adjustable Field Flattener 73A for Z73 Telescope P-FLAT73A
274,00 €2″ flattener by William Optics suitable for Z73 full-frame Apo telescope. M63 male threadtelescope side. Camera side a male M48x0.75 thread. Note: not suitable for smaller T-adapter with the 42mm T th
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Adjustable field flattener P-FLAT68III
750,00 €This revolutionary new William Optics Adjustable Flattener 68III is made for refractor of focal ratio f/6 – f/7.5. This high-quality flattener has been engineered and CNC machined for usage with our F
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AK2 Tripod Extension
68,00 €Height extension column for William Optics tripods. Raises the mount head for a more comfortable observing or imaging position.
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Bahtinov Mask Cover for WO Telescopes
90,00 €Dual-purpose Bahtinov mask and protective dust cover for William Optics telescopes. Precise focusing via diffraction pattern on bright stars.
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Binoviewer Complete Package
449,00 €William Optics Binoviewer Complete Package, 2 eyepieces and a Barlow lens included! Features 1.25” Binoviewer with anti-marring compression rings. 2x William Optics 20 mm WA 66 deg. eyepieces included
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Birding Extrapadding Case
198,00 €This Birding Extrapadding Case is specifically designed for Sony, Nikon, and Canon 600 F4 , offering added support and protection for your equipment. With a compact yet protective design, it is perf
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Camera flanged adapter for SBIG STL-11000 CCD
123,00 €Camera-specific flanged adapter for connecting SBIG STL-11000 CCD cameras to William Optics flatteners and reducers with correct spacing.
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Camouflage Tripod Pouch
23,00 €Featuring durable Velcro straps for secure attachment, this pouch offers ample storage space to make your wildlife observation experience more convenient.
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Canon EOS R M48
69,00 €This high-precision T Mount from William Optics is specifically designed for your Canon EOS R Mirrorless Camera. It is crafted from high-quality aluminum that has been anodized and CNC machined. It wi
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Canon M48 Adapter
46,55 €With this adapter, you can connect a camera with a camera bayonet. M48 thread.
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Cat 51 WIFD
798,00 €Explore the Stars with the William Optics Cat 51 WIFD Telescope
Embark on an unparalleled astronomical journey with the William Optics Cat 51 WIFD. This compact apochromatic refractor telescope mer -
Cat 61 WIFD
1 098,00 €Introducing the Cat 61 Astrograph f/4.9, a masterpiece of precision engineering. With its advanced optics and f/4.9 focal ratio, this telescope will allow you to capture stunning celestial images.
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Cat 71 WIFD
1 415,00 €Step up your stargazing game with the William Optics Cat71 WIFD, a superior apochromatic refractor telescope designed for those who demand more from their astronomical pursuits. Building on the founda
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Cat 91 WIFD
2 598,00 €Step up your astrophotography game with the William Optics RedCat 91, an advanced apochromatic refractor tailored for full-frame and medium-format cameras. This latest addition to the RedCat series co
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Cat Eyes Binoculars
168,00 €Discover a New Way of Seeing
The Cat Eyes binoculars are designed for immersive wide-angle viewing like never before. With an ultra-wide 30° field of view, you can take in expansive scenes at a gla -
CAT Mounting Ring
65,00 €Mounting ring for William Optics RedCat. Also suitable for Samyang 135mm f/2 lens.
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Counterweight Extension Bar for Skyguider Pro
47,00 €Extension bar for the iOptron SkyGuider Pro counterweight shaft. Provides extra reach for better balance with heavier camera and lens setups.
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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.
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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.