Another improvement on your most loved 110mm: NEW TMB designed air-spaced APO lens!

This scope is ultimately designed for astronomers who wants the best results in photographic/CCD work. Finally available at an AMAZING price in its class. Only the best and most expensive are on a par with this! Dedicated field flattener available.

Optically unbeatable
• Features a top-quality triplet air-spaced objective designed by USA leading designer, TMB.
• This scope is extremely sharp and has a great color correction, even better than the previous design. It is ideal for astrophotography.

Crayford Focuser
• Extra-smooth 4" Crayford focuser: a treat to use during astrophotography. No more image shifting!
• 360 deg. rotatable.
• Extra-heavy duty.
• Large aluminum knobs.

Patented Design
• Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
• Ball bearings on both sides of the focuser will make your focusing experience the best you ever experienced with a scope!
• Graduated scale for precise camera alignment.

DO-all Telescope
• Despite of its 110mm objective, the scope is still very compact and solid.
• The focuser is so strong there is no need for a locking screw.
• Two-speed microfocuser STANDARD on all units.

Simply Beautiful Finish
• 115mm Mounting rings included in the price.
• Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, golden finish, retractable dewshield, anodized 360 deg. rotatatable crayford focuser, dewshield cap.

Attention to Details
• Highly precise CNC machined lens cell.
• Solid CNC-machined mounting rings included in the price.

Total Quality Package
• Dedicated TMB-designed field flattener available.
• 2" & 1.25" adapters included.
• All with brass anti-marring compression rings.

Aluminum Case
• Stow away your telescope in the practical and safe aluminum case.
• Though you will never need it, you have a 2-year warranty from WO, and the certainty that we will be there to assist you even beyond that, if you need!

Anothe great 110mm: this time a fast doublet air-spaced APO!

This scope is ideal as an entry level astrophotography instrument, without disappointing for visual work. With a very high price/quality performance, it is a very compact scope that you will keep for life!

Optically unbeatable
• Features a very good doublet air-spaced objective.
• This scope has very good color correction considered its focal ratio.

Crayford Focuser
• Extra-smooth 2.5" Crayford focuser: a treat to use during astrophotography. No more image shifting!
• 360 deg. rotatable.
• Extra-heavy duty.
• Large aluminum knobs.
• Graduated scale for precise camera alignment.

Do-all telescope
• This scope is extremely compact and lightweight.
• The focuser is very solid and smooth.
• Two-speed microfocuse will help you achieve precise focusing at all times.

The newest ZenithStar II generation Doublet APO is a 80mm ED refractor ideal for everyone who needs an excellent back-up scope/ guiding scope at an excellent price, or a great first APO refractor, which you can use for planetary work, wide-field imaging, and crisp, high power observations...

Lens Design
• Doublet ED, using premimum Ohara FPL-51 Japanese glass, air spaced, in CNC machined ultra high precision lens cell.
• Each lens is Fully Multi-Coated with best in classanti-reflective coatings.

Low C.A.
• Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
• 80 mm clear aperture.

Nothing Left to Chance
• Fully CNC machined production, no plastic part used.
• Drawtube travel length 80 mm, with precision graduated scale.
• 1.25” adapter included.
• Brass Compression rings on the adapter: will not ruin your precious eyepieces!

Super Portable
• Retractable dewshield, for enhanced transportability.
• Only 2.8 kg. Perfect for piggybacking as guide scope.
• Optional rings, guiding rings and 0.8x field flattener/reducer are available!

Beautiful Anodizing
• Superior anodizing will not only give you a beautiful telescope, but also protect it by making the surface much harder than natural aluminum.
• Elegant blue finish, stylish like a designer product! It is particularly suited to be paired to SCTs as a guiding scope.

Wonderful WO Microfocuser
• William Optics 360-degree rotatable Crayford focuser, smooth and precise.
• Adjustable focuser tension.
• Super-smooth and reliable 1:10 micro focuser for fine focusing during astrophotography or visual observations alike.

Attention to Packaging
• Exclusive Aluminum carrying case included in the price.
• Water resistant case.
• Carry-on size: you do not have to leave your treasure home!
• Two-year, no fuss warranty and constant customer service!

This is William Optics NEW triplet AIR-SPACED, TMB designed 110mm ZenithStar refractor.
This beautiful scope is everything you always wanted in a refractor, starting from extreme sharpness for clear details, and APO color correction.

It has all the benefits of the ZenithStar family at a price that is truly unbelievable.

Optically Unbeatable
• Triplet air-spaced objective, TMB designed.
• Extremely sharp.
• Excellent color correction.
• STM coatings, for improved performance.

Fully Baffled
• Properly baffled.
• FMC on all surfaces.
• Value package with Dielectric Diagonal, Red Dot Finder and Mounting rings available for the bargain hunters!

Crayford Focuser
• Extra-smooth 360 deg. rotatable 2.5" Crayford focuser with 1:10 dual speed:  a treat to use during astrophotography. No image shifting!
• Heavy duty: perfect for your accessories.
• Adjustable tension
• Drawtube locking screw.

Do-all Instrument
• Despite its 110 mm objective, the scope is still very compact and solid. Many airlines will accept it as carry-on luggage!
• Perfect size for serious observations of deep sky objects and planets. Solar observations possible with proper additional equipment.

Superior Fit & Finish
• Graduated scale for precision focus alignment.
• William Optics fit and finish: aluminum tube, retractable dewshield, anodized rotating crayford focuser, golden finish and dewshield cap.
• Top quality anodizing.

Attention to Details
• High-precision CNC machined lens cell.
• Laser engraved logo and specifications on the lens cell.
• Large aluminum knobs for easier grip.

Total Quality Package
• 1.25" adapter included with brass anti-marring compression ring.
• Attractive package with WO accessories available.

Aluminum Case
• Each telescope is shipped properly packed into e practical and safe aluminum case.
• Optional mounting rings available.
• Though you will never need it, you have a 2-year warranty from WO, adn the certainty that we will be there to assist you even beyond that, if you need.

A small-aperture but extremely-portable APO scope at a GREAT price? ZS 66 SD Doublet APO is here to fit all your needs! At a BARGAIN PRICE !!!

Sharp to the edge and color free, no other scope will beat it's price/quality ratio! Excellent mechanics and fit and finish, Crayford 2-speed fine focuser, super-high transmission multi-coating, aluminum case. Fast focal ratio makes it your ideal fast set-up for travel astrophotography or piggybacking.

Lens Design
• SD glass (Japanese Ohara glass) doublet air-spaced, in CNC machined ultra-high precision lens cell.
• Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.

Low C.A.
• Fully baffled to block all extraneous off-axis light rays and prevent glancing reflections, increasing overall contrast.
• 66 mm clear aperture.
• Superior anodizing (blue) or powder painting (white) will not only give you a beautiful telescope, but also protect it by making the surface much harder than natural aluminum.

Nothing Left to Chance
• Perfect for EAZY-T Alt-Az Mount. You can slide it directly into the mount without a plate if you like.
• Fully CNC machined production, no plastic part used.
• Drawtube travel length 63 mm with graduated scale.

Super Portable
• Retractable dewshield, smallest size ever and enhanced portability!
• SCT thread adapter to 1.25” eyepieces with anti-marring brass compression ring.
•Can mount a WO 2” SCT star diagonal for 2” accessories usage.

Astrophotography super-apo
• Fast focal ratio for bright, high-quality astro-imaging.
• Dedicated field reducer/flattener available.
• 2" adapter available for astrophotography.
• Perfect for piggybacking as guide scope. Consider our new guiding rings!

Wonderful WO Microfocuser
• William Optics rotatable Crayford focuser, smooth and precise, ideal during astrophotography.
• Adjustable focuser tension.
• Super-smooth and reliable 1:10 micro focuser for fine focusing during imaging and visual observations alike.

Attention to Packaging
• Exclusive aluminum case or soft carrying bag included in the price.
• Water resistant.
• Carry-on size: you do not have to leave your treasure home!
• Two-year, no fuss warranty and constant customer service!