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Compact silver electronic filter wheel with five filter slots and USB-C port

iOptron

iOptron iEFW-15 5-Position Electronic Filter Wheel 1.25

SKU CH-ANQQ-4T79Y

A compact electronic filter wheel holds five 1.25″ filters and swaps them automatically via USB-C for astrophotography

  • Quick filter changes with 5-position electronic wheel
  • Automated control via USB-C for computer integration
  • Compact 20 mm profile adds minimal bulk to setup
  • Lightweight 220 g design enhances telescope portability
  • Accepts 1.25" mounted or 31 mm unmounted filters

Astrophotography Filter Automation

The iOptron iEFW-15 automates filter changes for astrophotographers using 1.25 inch mounted or 31mm unmounted filters. It holds five positions and connects via USB-C for computer control. This wheel suits imagers who want to switch bands without touching the telescope.

Simple USB-C Integration

Power and commands travel over a single USB-C cable to your computer, so no separate power supply is needed. The slim profile of .78 inches and 7.76 ounces keeps back-focus consumption low. Ensure your imaging software supports the wheel before purchase.

Stable Operation During Long Sessions

The lightweight 220 gram body adds minimal flexure to the imaging train during extended exposures. Electronic indexing moves cleanly between the five filter slots without mechanical vibration. It is built for continuous overnight runs rather than brief visual use.

How it compares

Measured against everything we stock in Binoculars, Scopes & Sights, at today’s prices. Recalculated every night.

Price $138.99
Pricier than about 59% of the 1,401 comparable items (median $93.99).

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the iEFW-15 filter wheel is rotating correctly after connecting it to my computer?

Connect the USB-C port to your computer and use the control software to command a filter change; the wheel should rotate to the selected position among the five slots.

What comes with the iEFW-15 and what must I purchase separately?

The filter wheel unit with its USB-C connection is included; you must buy 1.25" mounted filters or 31mm unmounted filters separately.

Which filter size should I choose for the iEFW-15's five positions?

The wheel accepts 1.25" mounted filters or 31mm unmounted filters; select the type that matches your existing filter set.

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