Product series:
The telescope manufacturer William Optics offers very high-quality apochromatic and achromatic refractors which are very well suited to visual observation, and especially to astrophotography.
William Optics
Apochromatic refractor AP 51/250 RedCat WIFD
$ 1,170.00
ready for shipping in 3-5
weeks
William Optics
40mm SWAN eyepiece, 2''
( 5 / 5 )
$ 267.00
ready for shipping in 24
h
William Optics
Guidescope UniGuide 32mm Red
$ 209.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 91/448 BlackCat 91 WIFD OTA
$ 3,950.00
ready for shipping in 24
h
William Optics
Guidescope UniGuide 50mm Red
$ 256.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 108/518 UltraCat WIFD
$ 4,880.00
ready for shipping in 24
h
William Optics
Diagonal mirror Dura Bright 90° 2"
$ 290.00
ready for shipping in 24
h
William Optics
Diagonal prism Cat 51 WIFD 90° 1.25"
$ 197.00
ready for shipping in 24
h
William Optics
Apochromatic refractor Pleiades 111 AP 111/528 Astrograph OTA
$ 5,000.00
Product can be shipped as of 15.12.2025
William Optics
Binocular telescope attachment ''BinoViewers'' with accessory package
$ 610.00
Product can be shipped as of 15.12.2025
William Optics
Apochromatic refractor AP 91/540 Space Gray OTA
$ 2,790.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 71/350 RedCat 71 WIFD
$ 1,740.00
ready for shipping in 24
h
William Optics
Apochromatic refractor AP 51/178 MiniCat WIFD OTA
$ 1,390.00
ready for shipping in 24
h
William Optics
Guidescope UniGuide 50mm Ultra
( 5 / 5 )
$ 256.00
ready for shipping in 24
h
William Optics
Camera adaptor T-Ring Nikon Z 48mm
( 5 / 5 )
$ 104.00
ready for shipping in 24
h
William Optics
Cat Series Saddle Handle Bar
( 5 / 5 )
$ 93.00
ready for shipping in 24
h
William Optics
Apochromatic refractor AP 156/1217 Fluorostar Gray OTA
$ 9,800.00
ready for shipping in 3-5
weeks
William Optics
Camera adaptor M48 compatible with Canon EOS
( 5 / 5 )
$ 69.00
ready for shipping in 24
h
William Optics
Flattner Flat61A for Z61
$ 384.00
ready for shipping in 24
h
William Optics
Guidescope Guide Star Apo 61
$ 770.00
ready for shipping in 24
h
William Optics
Carrying handle 243mm
$ 174.00
ready for shipping in 24
h
William Optics
Adapter M63 Adaptors for Flattener Flat6AIII
$ 69.00
Product can be shipped as of 15.12.2025
William Optics
Counterweight Extension Bar for iOptron Skyguider Pro
$ 69.00
Product can be shipped as of 15.12.2025
William Optics
M48 / Sony E Adaptors
$ 81.00
ready for shipping in 24
h
William Optics
Apochromatic refractor Pleiades 68 AP 68/260 Astrograph OTA
$ 2,790.00
ready for shipping in 3-5
weeks
William Optics
DSD 210 D-Prism rail
$ 69.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 156/1217 Fluorostar Red OTA
$ 9,800.00
ready for shipping in 3-5
weeks
William Optics
Polar wedge High Latitude SkyGuider Pro
$ 407.00
Product can be shipped as of 15.12.2025
William Optics
Adjustable Flattener Reducer Flat6AIII
$ 384.00
ready for shipping in 24
h
William Optics
Apochromatic refractor Pleiades 181 AP 181/998 Astrograph OTA
$ 24,000.00
ready for shipping in 6-10
weeks
William Optics
Polar wedge Low Latitude SkyGuide Pro
$ 407.00
ready for shipping in 24
h
William Optics
Vixen-Style 90mm Prism Clamp
$ 116.00
ready for shipping in 24
h
William Optics
Flat GT
$ 442.00
ready for shipping in 3-5
weeks
William Optics
Apochromatic refractor AP 61/360 ZenithStar ZS61 II OTA
$ 920.00
ready for shipping in 24
h
William Optics
Guidescope Guide Star Apo61
$ 760.00
ready for shipping in 24
h
William Optics
Diagonal prism RedCat 90° 1,25"
$ 197.00
ready for shipping in 24
h