We can offer you a range of very high quality refractors in this category. These include e.g. our two- and three-lens APM Apo instruments, our astrograph series, available as APM or APM-LZOS models. Equipped with Riccardi reducers / correctors or as a high-end version CNC LW II with Feathertouch extracts. All around excellent instruments that should leave no wishes.
The 80PHQ is a very transportable APO refractor for astrophotography with corrected field of view up to full frame format and for observing up to the highest magnification range.
Aperture 80 mm / focal length 600 mm / focal ratio f/7.5
4-element Petzval system with color clean triplet objective and one corrector lens built into the tube
Stable 3" RAP focuser with dual speed and 360° rotation
Sufficient working distance for observation with 2" accessories
Suitable photo adapters are included in delivery
Illuminated image circle with very good correction up to full frame format
CNC tube rings with Vixen style EQ5 dovetail bars and carrying handle
Finder shoe for standard finder and mini guiding telescopes available
High quality carrying case for optimal protection of the telescope
Each Quadruplet Apo is inspected upon receipt, you will receive an optimally adjusted telescope for successful photography and observation from the very beginning.
New Vixen SD103SII apochromatic high-performance refractor with FPL53 SD glass and improved optical properties for demanding observers and astrophotographers
Apochromatic high-performance refractor with FPL53 ED glass
Reduces chromatic aberration to an absolute minimum
Guarantees enormously high contrast and excellent sharpness
You get a very colour-pure, sharp and neutral image
Very light and transportable, ideally suited for mobile applications
Fully-coated 103 mm SD lenses without spacer plates
The apochromatic refractor with 102 mm aperture and 714 mm focal length offers highest optical performance and first-class mechanics for astrophotography and amateur astronomy
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
William offers with the REDCAT61 Astrograph a very well corrected telescope for astrophotography up to full frame format.
Aperture 61 mm / Focal length 300 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 internal focusing (William Internal Focus Design - WIFD) as with 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