• ES-ED10207-02
  • ES-ED10207-02
  • ES-ED10207-02
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Explore Scientific

Explore Scientific 102mm f/7 ED Triplet Apochromat Refractor — Sharp Color-Free Views for Visual Astronomy and Imaging

Explore Scientific 102mm f/7 ED Triplet Apochromat Refractor — Sharp Color-Free Views for Visual Astronomy and Imaging

$999.99
$999.99
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If you want color-accurate, high-contrast views of planets and stars — and the ability to image without fighting false color — the Explore Scientific 102mm f/7 ED Triplet APO is where the serious refractor upgrade happens. The air-spaced triplet design with ED glass virtually eliminates the chromatic aberration (color fringing) that achromats produce on bright objects, delivering pin-sharp stars and true-color planetary views.

At 102mm and f/7, it's versatile enough for wide-field deep-sky sweeping and high-magnification planetary work, with the focal length to support imaging without needing extreme focal reducers.

What you'll see:

  • Planets in true color — no purple or green fringing around Saturn, Jupiter, or the Moon
  • Saturn's rings, Cassini Division, cloud bands, and multiple moons under good conditions
  • Jupiter's cloud bands, festoons, and the Great Red Spot with excellent contrast
  • Double stars split cleanly with accurate, true color
  • Deep-sky objects — open clusters, globular clusters, bright nebulae, and galaxies with high contrast

What's in the box:

  • 102mm f/7 ED triplet apochromat OTA — air-spaced three-element lens, fully multi-coated
  • 2" dual-speed rack-and-pinion focuser with extension tubes — precise focus for visual and imaging
  • 2" dielectric star diagonal with 1.25" adapter — maximizes light throughput for visual observing
  • Vixen-style dovetail with cradle rings — compatible with most equatorial and alt-az mounts

Note: No eyepiece or finderscope included — this is an OTA. You'll need at least one 1.25" or 2" eyepiece, and we recommend adding a red-dot finder or 8×50 finderscope separately.

Specs:

Aperture 102mm — resolves ~1.14 arcseconds; splits close double stars cleanly
Focal Length 714mm
Focal Ratio f/7 — versatile for planetary and deep-sky use
Optical Design Air-spaced triplet apochromat with ED glass — minimal color fringing, excellent contrast
Focuser 2" dual-speed rack-and-pinion with extension tubes
Resolution ~1.14 arcseconds
Limiting Magnitude ~12.5
OTA Weight ~5.4 kg (12 lb)
Mount Interface Vixen-style dovetail + cradle rings

The step from achromat to apochromat is one you'll notice immediately — clean stars, true color, and images worth imaging.

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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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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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