William Optics GT Field Flattener and Focal Reducer

This is the new 0.8x Reducer/Flattener designed for the GT102 and other F6.9 to F7 refractors.

Features Male T2 adaptor and 2" Pushfit.


William Optics Flattener 6

This new 0.8x Reducer/Flattener has been developed specifically for the William Optics ZS71 and other F6 Williams Optics refractors such as the ZS70 and Megrez 72. It should also work successfully with other manufacturers F6 telescopes of similar aperture.

High-quality FMC
Lens-to-chip suggested distance: 55-57mm
Comes with T-ring thread for best distance setup results
2" nosespiece Included
Weight : 165g

Will provide good illumination and flat field across APS sized sensors and smaller.


Starlight Instruments FTF3545B Replacement Focuser for WO FLT 132

The Feathertouch FT3545 Focuser with adaptors for the William Optics FLT 132 Instrument.

Includes 4.5" Focuser Travel, 3.5" Barrell, 72 pitch Rack and pinnion mechanism, 92mm threaded end cap which is compatible with the WO 4" tube extenders and TMB large format field flattener.

Includes 10:1 gear reduction ratio.

Lifting capacity is approx 15 lbs. This focuser will easily handle just about any camera/filterwheel/AO combination you can throw at it.

Technical Specs:

Draw Tube Travel 114.30 mm | 4.50 In
Racked In from Mounting Face 108.077 mm | 4.255 In
Racked Out from Mounting Face 222.377 mm | 8.755 In
Diameter at Back Side (Eye Piece) of Draw Tube 92.71 mm | 3.65 In
Draw Tube Drive Mechanism Helical Rack and Pinion 72 Pitch
Reduction Ratio 10:1 (Approximately)
Travel per Pinion Revolution 21.46mm | 0.845 In
Lifting Capacity 5.5-6.8kg | 12-15 lbs


William Optics 1.25" Carbon Fibre Dielectric Diagonal

Superb quality 1.25" Dielectric coated diagonal.

Much better performance than low cost mirror or prism diagonals.

Technical Specs:

Ultra High Dielectric 99% reflectivity
Precision 1/10 lambda surface with
10mm-thick mirror.
Barrel threaded to fit a variety of filters.
Weight : 210 g


William optics 2 Inch Dielectric Coated Diagonal with CF Body

If what you are looking for is the highest achievable brightness, contrast and sharpness during critical observations with high-end instruments, The WO 90 2 inch mirror Dielectric star Diagonal is your choice. A premium product at a discounted price!

Technical Specs:

Ultra High Dielectric 99% reflectivity
Precision 1/10 lambda surface with
10mm-thick mirror.
2"- 1.25" adapter with brass clamping ring.
Inside diameter (48mm): threaded to fit a variety of filters.
Weight : 470 g
CF Body


William Optics Vixen Compatible Dovetail Plate

This dovetail fits the Eztouch and other mountings with a Vixen or Skywatcher compatible dovetail system.

Very rigid and works well with WO scopes fitted with the L shaped mounting bracket.


2 Inch prime Focus Camera Adaptor

The ideal 2" camera adapter for prime focus photography. Featutes T-Thread.


2 Inch Extender Tube

William Optics 2 Inch extender tube - ideal for straight through imaging.

Features brass compression ring.


William Optics 90mm CNC Tube Rings

High quality solid aluminum material with anodized black mounting rings makes your telescope looks outstanding. These 90 mm, felt-lined mounting rings are made out of solid aluminum, anodized, and will fit any scope with an outside diameter of 90mm, including scopes such as the Megrez 80, Zenithstar 80, GT81 etc


William Optics SCT Connection for 2" Push Fit Diagonals

Want to turn your standard push-in diagonal into an SCT diagonal without committing extra funds to a brand-new diagonal?

If you have a William Optics refractor diagonal (or clones), you can now purchase this simple adapter to turn it into and SCT diagonal, which you can use on SCT, our own ZenithStar 66 series and any other scope requiring an SCT diagonal.
Simply remove the push in nosepiece and replace with this.

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