William Optics
In a relatively short time, William Optics has established itself and its products as one of the world leaders in short-tube, highly-portable refractors, and has achieved quality recognition for many accessories such as the well celebrated WO Diagonals.
We plan to keep producing fine instruments both for the entry-level and the top-end segments. In the coming year, you will have many pleasant surprises: on top of a whole new range of larger Apochromatic telescopes, we will begin marketing new accessories and binoculars for all pockets.
Compact 50 mm f/4 guide scope with 1.25" connector - can be mounted on your telescope instead of the finder - perfectly suitable for ZWO mini autoguider and similar ones
- Aperture 50 mm
- Focal length 200 mm
- Weight only 520 grams
- Camera side connection 1.25" - clamping by Rotolock - clamped as screwed
- Sharpness adjustment by turning the objective - with lock ring
- Adjustable working distance of 0-15 mm behind the eyepiece clamp - suitable for all autoguiders with 1.25" body, such as ASI120 Mini
- Easy connection to the telescope instead of the finder, suitable for Skywatcher, TS-Optics, GSO, Vixen, Celestron, etc.
Characteristics:
- 3 lens Apochromat with FPL-53 element
- Aperture132mm, focal lenght 910mm, f/6.9
- Optimized OTA
- Attachable WO flatteners / correctors
- 3.3" R&P focuser
- Field illumination even for full frame sensors
Characteristics:
- 3 lens air spaced FPL-53 / lanthanum design
- Aperture156mm, focal lenght 1217mm, f/7.8
- Optimized OTA
- Attachable WO flatteners / correctors
- 3.7" R&P focuser
- Field illumination even for full frame sensors
- High quality 3 lens optics with FPL53 lenses
- CNC tube
- Massive 3.3" R&P focuser with 1:10 reduction ratio
- Focal length 780mm
- Aperture 120mm
- Focal ratio f/6.5
- APS-C and Fullframe Format
The new ZenithStar 61 are the most versatile and lightest apos from William Optics.
- High-quality optics with FPL53 lenses
- Universally applicable for nature and astronomical observations
- Ideal for astrophotography
- An ideal travel instrument
- Precise R&P focuser with 1:10 gear reduction
New ! Adjustable Flat61 for William Optics ZS61 II Telescopes
- Compensates for field curvature and enables sharp images at the edges
- Camera can be mounted directly with M48 camera adapter
- Suitable for refractors from f/5 to f/7
- Distance to chip plane is variably adjustable
The FLT 91 is the perfect apochromatic refractor for visually and photographically observing astronomers who demand the most from a medium-sized telescope.
- Three-element design with FPL53 glass
- 91 mm aperture, 540 mm focal length
- Rack and pinion focuser with gear reduction and "Rotolock" clamp
- Field rotator with degree markings and position lock
- Prism rail according to Vixen standard
- Versatile handle with Vixen standard finder shoe
- William Optics' patented Bahtinov mask
Colour variants:
- Red (standard)
- Grey
- Gold
Perfect astrophotography: Whether you are an experienced astrophotographer or an enthusiastic beginner - with this Reducer Flattener you can take impressive pictures with ease.
A valuable addition for the large refractors from William Optics
- Image correction right to the edge
- Reduction factor 0.72x
- M92 threaded connection to the telescope
- Universal connection with M48 to camera or filter wheels etc.
- Very high quality workmanship
The Gran Turismo refractor is an apochromatic triplet with FPL-53 element for highest colour purity and strong contrast! A refracting telescope that is versatile and leaves little to be desired.
- An ideal travel instrument
- High-quality 3-lens optics
- Can be used visually and photographically
- 2.5" focuser with 1:10 gear reduction
- Supplied with focus mask according to Bahtinov
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
