Focusers and Accessories

Explore Scientific’s dual speed, 2" AR Series Focuser comes with a 1.25" compression ring eyepiece adapter for added versatility. This adapter or y...

Explore Scientific™ David H. Levy Comet Hunter Telescope is rich in quality components. Among those is the 2? Comet Hunter Focuser, which also can ...

Description APO EDT Series Crayford Style Focuser Item Number FOC25H Weight 1.5lb; .68kg Diameter 2.5" Length 104.8mm

Finding and holding that perfect crisp focus is almost effortless with Explore Scientific’s Rack & Pinion Focuser. Defined by its precision, th...

Explore Scientific Two-Speed 10:1 Focus Knob Mechanism for 2.5" HEX Focusers

Introducing the SCT Parallizer®. This new application of Howie Glatter’s patented Parallizer® principle raises the bar for performance. The 2” hol...

User InstructionsThere is a misconception that the problem of the cylindrical slip-fit system we use for eyepieces and other optical accessories is...

T-adapter with Howie Glatter's Parallizer Patent alignment feature allows your image train to stay parallelThere is a misconception that the proble...

JMI Coiled Cord – JMI Hand Units is a coiled cord for Single-Control or Dual-Control Hand Units. It includes a 1/8" mono (TS) phone plug on (one or...

JMI EV Focuser Base – Cassegrain is an individual base part with a 2" diameter thread for JMI Event Horizon Focusers compatible with Cassegrain Tel...

JMI EV Focuser Base – Newtonian is an individual base part for JMI Event Horizon Focusers compatible with Newtonian Telescopes.

JMI EV Focuser Large Format Base – Cassegrain is an individual base part with a 3.25" diameter thread for JMI Event Horizon Focusers compatible wit...

JMI EV Focuser Standard Body is an individual body part for JMI Event Horizon Focusers.

A masterpiece of engineering and workmanship, JMI Dual-Speed Event Horizon Telescope Focuser – Cassegrain is a low-profile, friction-drive focuser ...

A masterpiece of engineering and workmanship, JMI Dual-Speed Event Horizon Telescope Focuser – Newtonian is a low-profile, friction-drive focuser d...

A masterpiece of engineering and workmanship, JMI Event Horizon Telescope Focuser – Cassegrain is a low-profile, friction-drive focuser designed fo...

A masterpiece of engineering and workmanship, JMI Event Horizon Telescope Focuser – Newtonian is a low-profile, friction-drive focuser designed for...

A masterpiece of engineering and workmanship, JMI Standard Event Horizon Telescope Focuser – Cassegrain is a low-profile, friction-drive focuser de...

A masterpiece of engineering and workmanship, JMI Standard Event Horizon Telescope Focuser – Newtonian is a low-profile, friction-drive focuser des...

The name is a mouthful - what it means is that we've made an adaptation mechanism to mount the ZWO EAF focus motor on our Crayford Focuser that wi...

Compatible with: Celestron C11 Celestron CG-11 Celestron CM-1100 Celestron Ultima 11 Celestron C14 Celestron CG-14 Celestron CM-1400 Celestron CM-...

Focusing is made easy with JMI MotoFocus – Celestron C8. MotoFocus is a battery operated hand control with an electric focus motor that attaches to...