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Explore Scientific

Explore Scientific Two‑Speed 10:1 Focus Knob for 2.5″ HEX Focusers (Model 625720)

Explore Scientific Two‑Speed 10:1 Focus Knob for 2.5″ HEX Focusers (Model 625720)

$99.99
$99.99
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The Explore Scientific Two‑Speed 10:1 Focus Knob (model 625720) upgrades your 2.5″ HEX focuser with an all‑metal, high‑precision fine‑focus mechanism — perfect for observers and imagers who demand smooth, accurate focusing. Whether you’re observing the Moon, planets, or deep‑sky objects, the dual‑speed control lets you quickly rack in/out (coarse focus) and then dial in precise critical focus (10:1 fine focus) for sharp, stable views or imaging. Constructed with stainless‑steel ball bearings for ultra‑smooth rotation and built to withstand repeated use, this focus knob is ideal for serious astronomical applications.

Features

  • Dual‑speed focuser with 10:1 fine‑focus reduction — coarse focus for quick adjustments, fine focus for precise, critical focus adjustments.

  • All‑metal construction — durable and stable, suitable for frequent use and heavy-duty operation.

  • Stainless‑steel ball bearing mechanism — provides super‑smooth, backlash‑free adjustment for better control and precise focusing.

  • Lightweight design (≈ 5.6 oz / 159 g) — adds minimal weight while enhancing performance.

  • Compatible with 2.5″ HEX focusers — allows upgrade without full focuser replacement.

Specifications

Specification Detail
Model Number 625720
Focuser Type Two‑Speed, 10:1 fine‑focus mechanism
Construction All‑metal body
Bearing Mechanism Stainless‑steel ball bearing
Weight ≈ 5.6 oz (≈ 159 g)
Compatibility 2.5″ HEX focusers (on supported telescopes)
Intended Use Visual astronomy & astrophotography — fine focus control for eyepieces or cameras

What’s Included

  • 1 × Two‑Speed 10:1 Focus Knob (model 625720)

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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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