Refractors
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Achromatic and APO refractor telescopes
Apochromatic refractors for astrophotography and observation
APM Telescopes offers here apochromatic refractor telescopes with especially high contrast imaging. These apos convince by a special optical quality and a reasonable price.
You will find here, besides our own brand, all important manufacturers of APO telescopes, like TS-Optics, Altair, LZOS, Explore Scientific, Skywatcher and many more.
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 € 4550.50 €
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 € 8026.55 €
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 € 5215.50 €
Estimated delivery time : 3-4 weeks (valid for new orders)
The Ultra-Cat 76 is a powerful apochromatic 76 mm refractor designed for astrophotographers who demand very high sharpness and color fidelity.
- Aperture ratio 1:4.8
- Petzval optical design with integrated corrector (five elements in total)
- Temperature-stable lens cells
- Color-pure and sharp imaging even when using a full-frame sensor
- William Optics Internal Focus Design (WIFD)
- Rotator and tilt flange included
- Patented multifunctional handle
- Camera-side connection: M54, M48
2290.00 €
Estimated delivery time : 1-4 weeks (valid for new orders)
The Ultra-Cat 56 is a high-performance 56 mm apochromatic refractor, designed for astrophotographers who demand exceptional clarity and true color accuracy.
- Aperture 56 mm, focal length 269 mm
- Focal ratio f/4.8
- Optical design according to Petzval with integrated corrector (five elements in total)
- No flattener necessary
- Temperature-stable lens cells
- Clear and sharp image even when using a full frame sensor
- William Optics Internal Focus Design (WIFD)
- 30 mm focuser travel
- Rotator and tilt flange included
- Patented multifunctional handle
- Connection on camera side: M54, M48
1398.00 €
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 € 1804.05 €
Estimated delivery time : 3-4 weeks (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
999.00 € 949.05 €
Estimated delivery time : 1-4 weeks (valid for new orders)
Fast 70mm high-performance astrograph F5.5 for demanding astrophotographers and observers with 5 lens elements in 5 groups
- Very fast 70mm high-performance astrograph for demanding astrophotographers
- Due to the large lenses there is almost no vignetting
- Complex construction with 5 lens elements in 5 groups for absolute correction
- Needle-thin stars up to the edge of the image field even with 44 x 33 mm camera format
- Large, stable eyepiece extension, also suitable for heavy cameras
- Extremely high sharpness, colour purity and contrast thanks to SD lenses
- Very large field illumination up to 55mm
- High Strehl intensity of 96.7% at visible wavelengths
- Optional reducer available for even faster results
- Optional motor focuser with two speeds can be retrofitted
4998.00 € 4498.20 €
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 € 1214.10 €
Estimated delivery time : 4-8 weeks (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 € 1124.10 €
Estimated delivery time : 3-4 days (valid for new orders)
New Vixen SD115SII apochromatic high-performance refractor with FPL53 SD glass and improved optical properties for demanding observers and astrophotographers
- Apochromatic high-performance refractor with FPL53 ED glass
- Reduces chromatic aberration to an absolute minimum
- Guarantees enormously high contrast and excellent sharpness
- You get a very colour-pure, sharp and neutral image
- Very light and transportable, ideally suited for mobile applications
- Fully-coated 115 mm SD lenses without spacer plates
- No more unwanted spikes visible on the stars
- High quality standard "Made in Japan"
- Dimensions: 125 x 920 mm
- Weight: 6.3 kg with accessories
3099.00 € 2789.10 €
Estimated delivery time : 3-4 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 € 2699.10 €
Estimated delivery time : 3-4 days (valid for new orders)
