Refracting telescopes

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

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

The 140 mm f/6.5 triplet apochromat convinces with a pure color image and a powerful 4" RAP focuser.

• Aperture 140 mm
• Focal length 910 mm
• Fast focal ratio f/6.5
• Air-spaced triplet objective - 2 ED elements provide an image free from chromatic aberration
• Solid 4" rack and pinion focuser with dual speed - ideal for astrophotography
• Intermediate threads for screwed adaptations, e.g. M68x1 female thread
• Retractable dew shield
• CNC tube rings, carrying handle and dovetail bar are included in the scope of delivery
• Carbon tube for easier transport and high stability
• Delivery in transport case
• Every apochromat is tested by the manufacturer and Teleskop-Service before shipment
• Each apo receives a serial number and is delivered with a photographical test certificate