• Explore Scientific 102mm f/6.5 achromat refractor OTA — versatile entry-level tube for planets and wide-field
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 2
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 3
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 4
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 5
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 6
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 7
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 8
  • Explore Scientific 102mm f/6.5 achromat refractor optical tube for planetary and wide-field viewing — view 9
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Explore Scientific

Explore Scientific 102mm f/6.5 Achromat Refractor — Versatile Entry-Level OTA for Planetary and Wide-Field Viewing

Explore Scientific 102mm f/6.5 Achromat Refractor — Versatile Entry-Level OTA for Planetary and Wide-Field Viewing

$300.00
$449.99 $300.00
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The Explore Scientific 102mm f/6.5 Achromat Refractor is a versatile, entry-level four-inch refractor telescope (optical tube only) that delivers bright, contrasty views of the Moon, planets, and wide star fields. Its air-spaced doublet achromatic optics and generous 102mm aperture make it a great value first "serious" refractor for visual astronomy.

Who it's for

Beginner and intermediate stargazers who want a larger-aperture refractor for the Moon, planets, and wide-field views at an accessible price (a mount is required; sold separately). New to the hobby? See our beginner's telescope guide.

Key features

  • 102mm air-spaced doublet achromat optics for bright, high-contrast views
  • f/6.5 focal ratio (663mm) — a nice balance of magnification and wide field
  • Great for the Moon, planets, and star fields
  • Optical tube only — pairs with a Vixen-compatible alt-az or equatorial mount

Specifications

Optical design Air-spaced doublet achromat refractor
Aperture 102 mm
Focal length 663 mm
Focal ratio f/6.5
Included Optical tube only — no mount
SKU DAR102065-02

Frequently asked questions

What's the difference between an achromat and an apo refractor?
An achromat uses two lens elements and is excellent value, with a little color fringing around very bright objects. An apochromat (apo) uses premium glass to nearly eliminate that fringing, at a higher price.

Is a mount included?
No — this is the optical tube only. You'll need a Vixen-compatible alt-azimuth or equatorial mount and a diagonal/eyepiece to observe.

What will I see?
The Moon in sharp detail, Saturn's rings, Jupiter's cloud belts and moons, double stars, and bright star clusters and nebulae.

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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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