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Astronomy tests William Optics’ new refractor

Superb craftsmanship and high-quality optics make this a 4-inch telescope you'll be proud to own.
William Optics' GT102 102mm f/6.9 Apo Refractor
Astronomy: William Zuback
To an amateur astronomer, nothing says flexibility like a good refractor. That’s why I jumped at the chance to review the William Optics GT102 102mm f/6.9 Apo Refractor. Perfect for grab-and-go observing, lens-type telescopes are capable of stunning wide-field views, high-power double star splits, and excellent lunar and planetary images. And that’s not even mentioning astroimaging.

The design has other benefits as well. Such scopes are essentially maintenance free, lightweight, and portable. The biggest drawbacks have typically been cost per inch of aperture and that bugaboo of the refractor design — false color (fringes around bright objects like the Moon and planets).

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