What’s New at William Optics Astronomy & Telescopes

Dedicated field flattener for Fluoro Star 110 and Fluoro Star 132 designed by Thomas Back Optical. This 68mm clear aperture field flattener ships with a CCD camera adapter and a 35mm camera adapter included in the price. A MUST HAVE item for serious imagers. Check out the performance on the FLT series.

A new amazing refractor that once more will set the benchmark on the market for high-quality short-tube refractors. The newest Megrez 90 APO from stock, no waiting! Recently reviewed by Sky and Telescope with excellent feedback!

NEWLY re-designed fr/ff. It now boasts a removable 2" nosepiece and rotating function. The field flattener is optimized for APS size chips, and recommended with telescopes from 66 to 90mm. Suggested lens to chip distance for optimal results is 56mm. The field flattener has an SCT-type thread that will easily screw onto your ZenithStar 66 SD APO to achieve an amazing ultra-wide field at f/4.8 You will not need to buy two different products for your 80mm refractors and your 66mm refractors. All in ONE! Simply loosen the set screws on the side and your adapter will rotate 360 deg. with a thumbscrew to lock it into place! The antireflection multi-coatings on all optical surfaces will boost transmission and enhance your astro-imaging performance! What you care most, your shots will show pinpoint stars and you will maximize to the full your apochromatic refractors' potential.

Contact your dealer to join the waiting list. Less than 1 month waiting for an amazing 5" refractor

Already shipping! This amazing new telescope offers users an incredible experience and competitiveness. The new TMB-designed 4" lens is an air spaced triplet with STM coatings f/7, ideal for both astrophotography and visual observation. OTA or package. Comes with free 2" Extender included in the price.

Take advantage of this promotion to upgrade your diagonal to a WO Dielectric Diagonals with high-accuracy mirror, and top-quality, life-long dielectric coating with extra high reflectivity of above 99%: you will be amazed of what you missed out with your cheap diagonal!
Find out why W.O. is so renowned for this product and many companies tried to copy it! The promotion applies to top-of-the-range Quartz Diagonals too!

I just had to drop you a line regarding the William Optic Apograde kit. I recently purchased the kit after damaging the fine focuser on an Astrotech AT80. Aside from the desire to convert the focuser to your higher quality dual speed unit, I was not pleased with either the color fringing or lack of sharpness of the scope at high magnification. The upgrade was painless to install, the focuser is now smooth as butter, and the images obtained on my first night of observing with the new objective were not just an improvement, they were absolutely stunning. The improvement in color correction is expected. What I did not expect is a scope that now rivals 102mm apochromatic refractors that cost three times my investment, and this is no exaggeration. In recent comparisons to an 8 inch SCT, my scope provided views of Jupiter that were sharper and equal in planetary detail. Thanks for this fine product.

Daryl Bothwell
Danville, California

Just a quick note to thank you for the Megrez II SD APO upgrade package. I was already impressed with the color correction of the 80mm Megrez. It wasn't up to the level of a good apochromatic scope, of course, but it certainly was better than most, if not all, achromats I've used, including the Stellarvue 102DN, my previous choice for 'best achromat.' So I was completely unprepared for the absolutely amazing improvement in both color correction and image brightness when I installed the WO APO upgrade. The micro-focuser was a very nice bonus (and a steal at less that $40.00), allowing quick and accurate focusing. I could get the same focusing performance with the original single-speed Crayford but it took a LOT longer to get there!

Congratulations on a truly impressive upgrade. Also, please convey my thanks to Jennifer, David and all the folks at William Optics - they really understand the meaning of Customer Service . Now, if only WO made a similar upgrade for my 102DN...!

John M Dho
Redondo Beach , CA

NOW available in WHITE and BLUE to suit your SCT scope if you decide to piggyback it.

Precision machined, extremely robust but compact, thanks to the highly acclaimed Crayford design (friction drive) which allows tolerances much better than standard rack & pinion focuser, you will enjoy extremely smooth focusing, zero image shift and zero backlash. These focusers make a great upgrade for your favorite Schmidt- Cassegrain telescope (or SCT), or Synta-made refractor (Orion, Skywatcher, Saxon, etc.)

Includes SCT (blue or black, Meade, Celestron etc.), NEW Synta Upgrade Crayford Focusers (Skywatcher, Orion, Konus etc.). All with dual speed 1:10 micro focusers for fine focus easy adjustment!

The latest photos from William Optics customers taken with William optics refractors and accessories. Feel free to contact us to have you website listed under our WO USERS page.

We will list here the latest reviews on William Optics products, from customers and magazines.