Telescopes

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

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

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

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.