Focus Scientific

William Optics has a reputation for high-end and affordable telescopes and accessories. Their philosophy of “More quality for Less money” is aimed at making instruments outside the reach of the average pocket, such as apochromatic refractors, affordable and easy to get hold of for anybody who wants to.

Serious stargazer can appreciate the optical and mechanical excellence of a William Optics telescope.

William Optics cooperate with some of the most famous companies, both as suppliers and partners and as OEM clients, their established international presence and a growing market response and appreciation, testify to their commitment to deliver only the very best to you.

Totally focused on offering premium optics paired with unrivalled mechanics, all for an outstanding final value.

Focus Scientific sells the complete line of William Optics products. If you don't see it on our website, please contact us.

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*New* William Optics Cat Series Saddle Handlebar (Titanium Grey)

Manufacturer
William Optics
Model
M-HCRCTG
William Optics 24mm Crosshair Eyepiece for Finder (1.25")

Manufacturer
William Optics
Model
E-WA24
William Optics 48mm (female) to 42mm (male) Adapter

Manufacturer
William Optics
Model
YE-M48-42
William Optics 50mm Correct Image Angled Finder (blue)

Manufacturer
William Optics
Model
M-F50II(blue)
William Optics 50mm Correct Image Angled Finder (gold)

Manufacturer
William Optics
Model
M-F50II(gold)
William Optics 50mm Correct Image Angled Finder (red)

Manufacturer
William Optics
Model
M-F50II(red)
William Optics 50mm Guiding Scope with RotoLock (blue)

Manufacturer
William Optics
Model
M-G50II(blue)
William Optics 50mm Guiding Scope with RotoLock (gold)

Manufacturer
William Optics
Model
M-G50II(gold)
William Optics 50mm Guiding Scope with RotoLock (red)

Manufacturer
William Optics
Model
M-G50II(red)
William Optics 90 ° Erecting Diagonal for RedCat (1.25")

Manufacturer
William Optics
William Optics Binoviewer (1.25")

Manufacturer
William Optics
Model
E-BINO-P
William Optics Durabright CF Plate Diagonal w/ Thermometer (2")

Manufacturer
William Optics
Model
D-DIG2D-C-DB
William Optics FLAT61A Adjustable Flattener for Z61 APO Refractors

Manufacturer
William Optics
Model
P-FLAT61A
William Optics Flat68III Field Flattener for f/6-7.5 Refractors

Manufacturer
William Optics
Model
P-FLAT68III
William Optics Flat6AIII 0.8x Reducer Flattener for GT71, GT81, Z103, Z126

Manufacturer
William Optics
Model
P-FLAT6AIII
William Optics Flat8 Field Flattener 8 0.72x Reducer Flattener for f/6-7.8 Refractors

Manufacturer
William Optics
Model
P-FLAT8
William Optics FLT132 Mk III  Fluorostar 132mm f/7 Apochromat Refractor OTA (Blue)

Manufacturer
William Optics
Model
A-F132-RP33RII-blue
William Optics FLT132 Mk III  Fluorostar 132mm f/7 Apochromat Refractor OTA (Gold)

Manufacturer
William Optics
Model
A-F132-RP33RII-gold
William Optics FLT132 Mk III  Fluorostar 132mm f/7 Apochromat Refractor OTA (Red)

Manufacturer
William Optics
Model
A-F132-RP33RII-red
William Optics GT153 Gran Turismo 153mm f/7.8 Apochromat Refractor OTA (Blue)

Manufacturer
William Optics
Model
A-F153GT-blue
William Optics GT153 Gran Turismo 153mm f/7.8 Apochromat Refractor OTA (Gold)

Manufacturer
William Optics
Model
A-F153GT-gold
William Optics GT153 Gran Turismo 153mm f/7.8 Apochromat Refractor OTA (Red)

Manufacturer
William Optics
Model
A-F153GT-red
William Optics GT71 Mk II Gran Turismo 71mm f/5.9 Apochromat Refractor OTA (Gold)

Manufacturer
William Optics
Model
A-F71GT-gold
William Optics GT81 Mk III Gran Turismo 81mm f/5.9 Apochromat Refractor OTA (Blue)

Manufacturer
William Optics
Model
A-F81GTII-blue
William Optics GT81 Mk III Gran Turismo 81mm f/5.9 Apochromat Refractor OTA (Gold)

Manufacturer
William Optics
Model
A-F81GTII-gold
William Optics GT81 Mk III Gran Turismo 81mm f/5.9 Apochromat Refractor OTA (Red)

Manufacturer
William Optics
Model
A-F81GTII-red
William Optics High Latitude Vixen Style Mount Base Mount for Star Tracker

Manufacturer
William Optics
Model
YG-IO-SG01H-RD
William Optics High Latitude Vixen Style Mount Base w/ Extension Bar for iOptron SkyGuider Pro

Manufacturer
William Optics
Model
YG-IO-SG01H-RD-P
William Optics High Precision COPPER 48mm T-adapter for Canon EOS

Manufacturer
William Optics
Model
YE-TR-BR48-C
William Optics High Precision COPPER 48mm T-adapter for Nikon

Manufacturer
William Optics
Model
YE-TR-BR48-N
William Optics Low Latitude Vixen Style Mount Base Mount for Star Tracker

Manufacturer
William Optics
Model
YG-IO-SG01L-RD
William Optics Low Latitude Vixen Style Mount Base w/ Extension Bar for iOptron SkyGuider Pro

Manufacturer
William Optics
Model
YG-IO-SG01L-RD-P
William Optics Red Dot Finder with Mounting Base

Manufacturer
William Optics
Model
M-RDF-P-VB
William Optics RedCat 51 250mm f/4.9 Gen 1.5 APO Telephoto Lens

Manufacturer
William Optics
Model
L-RC51IX
William Optics Reticle Illuminator for 24mm Crosshair Eyepiece

Manufacturer
William Optics
Model
E-IR
William Optics Slide-Base 50mm Clamping Guide Rings

Manufacturer
William Optics
Model
M-GR50IISL
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