Telescopes

• Aperture 203 mm
• Effective focal length 690 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 Hypergraph203 is tested and optimized on our optical bench before storage
• Made in Germany!

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

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.

The eVscope 2 combines power and speed with expert optical knowledge to deliver the most immersive experience in space exploration.

Leveraging Nikon's pioneering expertise in electronic eyepieces, the eVscope 2 offers the most stunning visual experience ever seen in a consumer telescope, with enhanced image resolution of 7.7 MPx, state-of-the-art observing comfort and amazing detail, sharpness and zoom capability.

• Quick to set up and ready to go
• Track real-time observations directly on the display
• Manual calibration not necessary
  
• Nikon eyepiece technology

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

ARTEC astrographs employ optics that match the mechanical precision of the instrument. Key specifications include:

• Reflectivity greater than 95%
• Surface correction of λ/8 or better
• Strehl ratio of 0.95 or higher

The eVscope 2 combines power and speed with expert optical knowledge to deliver the most immersive experience in space exploration.

Leveraging Nikon's pioneering expertise in electronic eyepieces, the eVscope 2 offers the most stunning visual experience ever seen in a consumer telescope, with enhanced image resolution of 7.7 MPx, state-of-the-art observing comfort and amazing detail, sharpness and zoom capability.

• Quick to set up and ready to go
• Track real-time observations directly on the display
• Manual calibration not necessary
  
• Nikon eyepiece technology

High-Performance Optics – Quartz Mirrors, Superior Coatings

• Optical design: Classic Newtonian
• Primary mirror diameter: 206mm (conical quartz)
• Secondary mirror diameter: 88mm
• Native focal ratio: f/4.0
• Focal length: 800mm (912mm with coma corrector)
• Included coma corrector: 1.14x, resulting in f/4.5
• Mirror material: High-grade quartz with >95% reflectivity
• Optical correction: λ/8 or better
• Strehl ratio: ≥ 0.95
• Linear obstruction: 44%
• Fully illuminated field: 39mm
• Corrected field: 55mm – ideal for full-frame sensors

• 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!

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

The Askar 185APO is an apo refractor with 185 mm aperture, 1295 mm focal length and a focal ratio of 1:7 with many practical features.

• Aperture 185 mm - Focal length 1295 mm - Focal ratio f/7
• Triplet objective with one ED element
• Stable 3,5" RAP focuser with micro reduction, 360° rotation connection and 100 mm adjustment travel
• Sufficient working distance for observation with 2" accessories and for photography
• Flattener and two reducers available (0.8x)
• CNC clamps with dovetail bar (Losmandy) and carrying handle
• Two finder shoes

Each optical set is selected to match the telescope’s overall precision:

• Reflectivity > 95%
• Correction of λ/8 or better
• Strehl Ratio ≥ 0.95