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.

Wilia Optics SPL Eyepiecs

William Optics is proud to introduce the SPL (Super Planetary Long eye-relief) eyepieces. This new Planetary Eyepiece series is designed for users with the need for high-power, sharp and contrast views for planetary observations. The long eye relief is a bonus for people with eyeglasses and for people who do not want to strain their eyesight during observation sessions.

High Quality Optical Lens
Special glasses and perfect multi-coatings make the optical performance of SPL amazing in almost any telescope. a very well corrected field of view, free from optical aberrations allows you to finally enjoy planets as they deserve.
Good transmittance and excellent color rendition will allow you to enjoy planetary details you had missed so far.
Leave ghosting and flares to other eyepieces:your William Optics SPL will not disappoint you.

High Power and High Contrast
Available in three focal lengths, 3mm, 6mm, and 12.5mm, these eyepieces will satisfy any power requirement. Easy to Barlow, they will yield amazing results even at the highest powers (provided that atmospherical conditions and your telescope canhandle such high powers!).
Great contrast and sharp to the edges
Distortion-free EXTRA details is not a miracle: it all goes down to quality construction and design. SPL give you just what you always wanted.

Long Eye relief
All three focal lengths boast very long eyerelief for maximum viewing comfort even for eyeglass wearers.
Mechanically beautiful and functional tapered barrel.
Blackened lens edges and flat black paint in the barrel to minimize sources of potential reflections.

Excellent value
The very competitive price of these planetary eyepieces will encourage you to get the whole series to add to your keep-a-lifetime eyepieces!


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.


William Optics Red Dot Finder (R.D.F.)

This very practical Red Dot Finder (r.d.f.) comes with a handy, quick -release bracket included in the price. It fits perfectly on any WO telescope.

Centering your objects in the sky has never been easier!

Look through the finder with one eye leaving the other open, and you will see one of the four selected LED shapes in the sky.

Supern quality and a big improvement on inexpensive Red Dot Finders.


William Optics 2" FLT Extender Tube

2" Screw thread extender that threads straight to the rear of the FLT 110/132 focuser and is sued for imaging straight through with no diagonal in place.


2 Inch prime Focus Camera Adaptor

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

1 2 >