Apochromatic Refractors

Apochromatic Refractors

We can offer you a range of very high quality refractors in this category. These include e.g. our two- and three-lens APM Apo instruments, our astrograph series, available as APM or APM-LZOS models. Equipped with Riccardi reducers / correctors or as a high-end version CNC LW II with Feathertouch extracts. All around excellent instruments that should leave no wishes.

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High quality ED refractor with 80 mm opening, flip mirror and transport case for discerning observers.
1109.00 €
Estimated delivery time : 1-4 days (valid for new orders)
 
 
Vixen Fluorit Refractor FL55ss
1119.00 €
Estimated delivery time : 3-4 days (valid for new orders)
 
 

The Vixen SD103S is a new high-performance Super ED apochromat that produces sharp, high-contrast and true-colour images

  • Apochromatic refractor
  • High-performance Super FPL-53 ED glass lens
  • Short overall length and low weight
  • Ideal for planetary observation and photography
  • Illumination with a 44mm image circle for full format
  • Ideal travel equipment for observation and photography
  • Solid quality MADE IN JAPAN
2069.25 € 1679.00 €
Estimated delivery time : 1-4 days (valid for new orders)
 
 
Der Vixen SD115S ist ein neuer Hochleistungs-Super-ED Apocromat und begeistert durch seine hohe Schärfe, Kontrast und farbreinheit
2999.00 €
Estimated delivery time : 3-4 days (valid for new orders)
 
 
The Vixen SD81S is a new high performance Super-ED Apocromat and inspires with its high sharpness, contrast and color purity.
1249.00 €
Estimated delivery time : 3-4 days (valid for new orders)
 
 
New Vixen SD81SII high performance apochromatic refractor with FPL53 SD-glass for demanding observers and astrophotographers with improved optical properties
1349.00 € 1049.00 €
Estimated delivery time : 3-4 days (valid for new orders)
 
 
From the beginning, the goal was to create the best possible design for an affordable, small, lightweight, and fast Apochromatic refactor for astrophotography.

Characteristics:

  • 4 lens Petzval optical design
  • Aperture 51mm, focal lenght 250mm, f/4.9
  • Massive OTA from Aluminum alloy
  • Compact and ultra portable
  • Field rotator
  • Helical focuser design
  • Tilting platform
  • Field illumination even for full frame sensors
1061.00 €
Estimated delivery time : 1-4 days (valid for new orders)
 
 
William offers with the REDCAT61 Astrograph a very well corrected telescope for astrophotography up to full frame format.
  • Aperture 61 mm / Focal length 300 mm / Focal ratio f/4.9
  • Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)
  • Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary
  • Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm
  • 360° rotation of the camera for the right display window
  • Focusing via internal focusing (William Internal Focus Design - WIFD) as with telephoto lenses
  • Tilting option for individual adjustment of the camera sensor to the telescope
  •  Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread
  • Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery
1899.00 €
Estimated delivery time : 3-4 weeks (valid for new orders)
 
 
This three-lens apochromat with FPL-53 element and STM coating delivers color-pure, crisp images! Stars are pin sharp points, bright objects like moon and planets show no color fringes, but a lot of details!

Characteristics:

  • 3 lens Apochromat with FPL-53 element
  • Aperture132mm, focal lenght 910mm, f/6.9
  • Optimized OTA
  • Attachable WO flatteners / correctors
  • 3.3" R&P focuser
  • Field illumination even for full frame sensors
5490.00 €
Estimated delivery time : 3-4 weeks (valid for new orders)
 
 
The APO refractor Fluorostar has a three-lens air-gap objective using the ED special glass FPL-53 from Ohara, Japan, and glass made of lanthanum.

Characteristics:

  • 3 lens air spaced FPL-53 / lanthanum design
  • Aperture156mm, focal lenght 1217mm, f/7.8
  • Optimized OTA
  • Attachable WO flatteners / correctors
  • 3.7" R&P focuser
  • Field illumination even for full frame sensors
8449.00 €
Estimated delivery time : 3-4 weeks (valid for new orders)
 
 
Discover the universe in breathtaking clarity with the William Optics Fluorostar 120 Telescope!

Key data:
  • High quality 3 lens optics with FPL53 lenses
  • CNC tube
  • Massive 3.3" R&P focuser with 1:10 reduction ratio
  • Focal length 780mm
  • Aperture 120mm
  • Focal ratio f/6.5
  • APS-C and Fullframe Format

  
4790.00 €
Estimated delivery time : 3-4 weeks (valid for new orders)
 
 

The new ZenithStar 61 are the most versatile and lightest apos from William Optics.

  • High-quality optics with FPL53 lenses
  • Universally applicable for nature and astronomical observations
  • Ideal for astrophotography
  • An ideal travel instrument
  • Precise R&P focuser with 1:10 gear reduction
799.00 €
Estimated delivery time : 3-4 days (valid for new orders)