TS Optics

• Aperture 254 mm
• Effective focal length 863 mm
• Focal ratio f/3.4
• Full correction up to 44 mm diameter with good illumination
• Carbon tube for good focus and mechanical stability
• 3" dual-speed RAP focuser with integrated corrector
• Working distance 55 mm from M48x0.75 thread with integrated connection for 2" filter
• Additional threads M54x0.75 and M68x1 available for individual adaptations
• Each TS Hypergraph254 is tested and optimized on our optical bench before storage
• Made in Germany!

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

Ritchey Chretien astrograph with 250 mm aperture with corrector and fast focal ratio of f/6.4 for astrophotography with sensors up to full frame format

• Aperture 250 mm / focal length 1625.5 mm / focal ratio f/6.4
• High quality 3" rack and pinion focuser with internal corrector and 360° rotation - everything is screwed together
• Primary mirror and secondary mirror made of quartz glass for stable focus position
• 94% enhanced reflectivity on primary mirror and secondary mirror for a bright image and short exposure times
• Carbon truss tube with high quality workmanship for optimal stiffness and focus stability
• Working distances 55 mm from M48x0.75 thread (adapter included) and 73.7 mm from M68x1 thread for individual adaptations
• Two Losmandy style dovetail bars for adapting to mounts and attaching optional accessories such as guiding scope
• The focuser can be tilted independently from the primary mirror (tilting)
• Ventilation of the primary mirror accelerates cooling down
• Extensive accessories like 2" connection for observation, extension rings between focuser and telescope, finder shoe on the tube ...
• Each RC is checked and optimized by TS/APM before shipping. It is provided with a checklist.