Telescopes

The William Optics GT 81 apo stands for optimal chromatic correction and best possible contrast - a powerful travel telescope for observation and photography.

• Aperture 81 mm
• Focal length 480 mm
• Focal ratio f/5.9
• Multicoated FPL53 triplet lens with air gap
• 2.5" RAP focuser with M63x1 connection thread, as well as 2" and 1.25
• Multifunction handle with holder for guide scopes
• Bahtinov mask integrated
• Variable carrier bag
• Vixen/EQ5 style dovetail bar

Innovative and revolutionary William Optics design combines precise internal focusing with the highest quality optics available to create the ultimate apochromatic refractor for astrophotography

• FPL53 Triplet Lens
• Aperture 81 mm, focal length 480 mm
• Internal focusing prevents image shift and vignetting
• Saddle bar handle for mounting the guiding telescope
• Incl. test report
• Incl. carrying bag

William offers with the REDCAT71 Astrograph a very well corrected telescope for astrophotography up to full frame format.

• Aperture 71 mm / Focal length 350 mm / Focal ratio f/4.9
• Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)
• Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary
• Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm
• 360° rotation of the camera for the right display window
• Focusing via precise helical focuser like telephoto lenses
• Tilting option for individual adjustment of the camera sensor to the telescope
• Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread
• Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery

Fully automatic GoTo telescope for astrophotography with built-in camera - photographing the starry sky has never been so easy.

• Triplet APO objective with 30 mm aperture and 150 mm focal length with true apochromatic image
• Sony IMX662 color sensor with 6.45 mm diagonal and high resolution with 2.9 µm pixels - 2.10 megapixels
• Larger angle of view than the Seestar S50, plus wide-angle system with over nine times the field diameter
• WiFi and Bluetooth control via smartphone or tablet app
• Three versatile shooting modes: solar system objects, deep-sky objects, scenic views
• Recommendations for objects that can be seen that night, combined with quick setup so you can use your valuable time for observation
• Select one of more than 4000 objects, wait for the telescope to find it and start shooting.
• Three permanent built-in filters: UV/IR block filter for all objects, duo-band filter to increase contrast for all gas nebulae, dark filter for calibration
• One-touch capture of the Sun, Moon, planets, galaxies, nebulae, and star clusters
• Smarter Mosaic Photography - time-saving and effortless (automatically captures the selected region)
• Magnetically adhering front solar filter for observing the sun
• Sensors for tripod leveling via the app
• Low power consumption for long battery life (4 hours video mode, 6 hours in general)
• Autofocus ensures sharp and high-contrast images
• AI noise reduction for smoother and more beautiful images
• Very portable with a weight of only about 1.8 kg

With the use of a mobile app, this telescope allows for easy capturing of sky objects such as the Sun, Moon, galaxies and nebulae.

• 50 mm aperture and 250 mm focal length allow for a compact design, triplet design for high image quality
• Sony IMX462 supplies "Full HD" quality
• WiFi and Bluetooth - use smartphone or tablet app for controlling
• Recommendations for objects to view at the specific night, combined with quick setup, so you use your valuable time for observing
• Select an object, wait for the telescope to locate it and start shooting
• Two permanently installed filters: UV/IR cut filter for all objects, UHC for increasing the contrast of all emission nebulae
• Live stacking mode, so increasing image color and details while viewing
• Sensors for tripod levelling via app
• Low power consumption for extended battery life
• Auto focus ensures sharp and crisp images
• Super compact and lightweight: 142x129x257 mm, 3 kg

With the use of a mobile app, this telescope allows for easy capturing of sky objects such as the Sun, Moon, galaxies and nebulae.

• 50 mm aperture and 250 mm focal length allow for a compact design, triplet design for high image quality
• Sony IMX462 supplies "Full HD" quality
• WiFi and Bluetooth - use smartphone or tablet app for controlling
• Recommendations for objects to view at the specific night, combined with quick setup, so you use your valuable time for observing
• Select an object, wait for the telescope to locate it and start shooting
• Two permanently installed filters: UV/IR cut filter for all objects, UHC for increasing the contrast of all emission nebulae
• Live stacking mode, so increasing image color and details while viewing
• Sensors for tripod levelling via app
• Low power consumption for extended battery life
• Auto focus ensures sharp and crisp images
• Super compact and lightweight: 142x129x257 mm, 3 kg
• Bundle with dust cap
  

102mm (4") f/500 ALT-AZIMUTH REFRACTOR TELESCOPE

The special feature of the 140mm SD APO:

• Very high quality processed and of convincingly good optical quality
• Colorless optics with FLP53 glass
• Precise 2.5" focuser with 1:10 mirco reduction for heavy accessories
• With f / 7 ideal for visual
• With f/5,25 ideal for photographic purposes
• &CNC tube rings
• Carry handle
• Very good value for money

Apochromatic refractor AP 130/780 LZOS 3.7-ZTA OTA 

• Our LZOS Super ED 3-lens models come with a test report, meaning that each lens is individually measured using a Twymann interferometer and recorded with the serial number of the lens.
• Maximum Strehl ratio (as with the Zeiss APQ) is guaranteed to be 95% or better.
• Residual chromatic aberration optimized to a minimum.
• Temperature-compensating mount.

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