Key Takeaways:
- The William Optics Megrez 90 and ZenithStar 66SD refractor telescopes are reviewed, highlighting their portability and suitability for travel.
- Both telescopes are described as exhibiting high-quality construction, featuring aluminum and plastic cases with protective foam.
- The Megrez 90 is noted for its white barrel, oversized dew cap with gold anodizing, and gold-anodized lens cap and focuser ring.
- The review emphasizes the telescopes' compact size, making them convenient for urban or travel astronomy.

This review, “Sky-testing William Optics’ new refractors,” appeared in the October 2007 issue of Astronomy magazine
First impressions last. I know you shouldn’t judge books by their covers, but the William Optics Megrez 90mm apochromatic refractor (APO) and the ZenithStar 66SD APO exude quality. Even the swan logo provides an extra touch of class.
The new breed of light-weight and short-focal-length telescopes is a far cry from refractors of the mid-20th century and earlier. Today’s urban amateur who needs a quick “observing fix” will find this pair of scopes from William Optics just the tools for backyard browsing or traveling. These instruments are so compact, you can put them in your Mini Cooper and be off to your favorite dark site in no time.
Two gorgeous scopes
Both telescopes come in well-constructed (high-impact) aluminum and plastic cases with protective foam linings. The Megrez 90 has a white barrel with an oversized, extendable dew cap. William Optics anodized the back end of the dew cap in gold, which adds to this instrument’s overall visual impact. Even the lens cap is gold-anodized. Where the tube joins the focuser, a gold ring completes the look.
To continue reading this review you need to be an Astronomy magazine subscriber.
Subscribers have full access to our equipment review archive and many other great online benefits.
Already a subscriber? Simply log in or create an account below.
