Apochromatic Refractors
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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.
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
An ultimate and compact APO refractor for astrophotography and observation.
- Aperture 110 mm / focal length 528 mm / focal ratio f/4.8
- FCD100 triplet lens with f/6 - chromatic correction comparable to FPL53 triplet
- 4-element 0.8x corrector with M48 camera connection and working distance of 55 mm included - designed for this lens for highest field sharpness
- 2" filter thread and 360° rotation included
- 2" Visual-Back can be screwed to the focuser instead of the corrector for observation - working distance suitable for 1.25" and 2" accessories
- Delivery in high-quality carrying case
- Each apo is tested (cosmetics, optics and mechanics) at Teleskop-Service before shipment, the optics are collimated. The apo is shipped with a checklist.
The FLT 91 is the perfect apochromatic refractor for visually and photographically observing astronomers who demand the most from a medium-sized telescope.
- Three-element design with FPL53 glass
- 91 mm aperture, 540 mm focal length
- Rack and pinion focuser with gear reduction and "Rotolock" clamp
- Field rotator with degree markings and position lock
- Prism rail according to Vixen standard
- Versatile handle with Vixen standard finder shoe
- William Optics' patented Bahtinov mask
Colour variants:
- Red (standard)
- Grey
- Gold
This long focal ratio flatfield apochromat support 60 mm image circle and does not need calculations for backfocus. If the image is sharp, the field is flat.
- 130 mm aperture, 1000 mm focal length, f/7.7
- Petzval like, self flattening design with two ED elements
- 3.4" dual speed focuser
- 2" and 1.25" receptacles, M68, M54 and M48 threads
- Retractable dew shield
- Losmandy style dovetail bar
- Handle
- Vixen type finder base
Aug 25 2025
