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Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
ZWO EFW - 8 x 1.25" or 31mm

ZWO EFW - 8 x 1.25" or 31mm

by ZWO
SKU ZWO-EFW-8x1.25
$0
$299.00 USD - $299.00 USD
$299.00
$299.00 USD - $299.00 USD
$299.00 USD
  • For 1.25" or 31mm filters
  • Easy to install on the telescope and the camera
  • Filters are easy to install
  • Made with NPM Stepper Motor from Japan
Availability:
1 in stock

International Shipping

More information

  • ZWO EFW 8 x 1.25″/31mm Electronic Filter Wheel - Overview

    Compact, Lightweight, and Reliable

    The ZWO EFW (Electronic Filter Wheel), larger yet impressively lightweight at just 400 grams (14 oz), is the ideal choice for astrophotographers seeking precision and simplicity in filter management.

    ZWO EFW 8 x 1.25″/31mm Electronic Filter Wheel - Slim and Sturdy Design

    Slim and Sturdy Design

    CNC-milled from aircraft-grade aluminum for durability.

    Ultra-thin design with a body thickness of just 20 mm, ensuring portability and easy integration into your astrophotography setup.

    High-Quality Stepper Motor

    Powered by a reliable NPM stepper motor from Japan, ensuring long-lasting performance and smooth, precise filter rotation.

    ZWO EFW 8 x 1.25″/31mm Electronic Filter Wheel - High-Quality Stepper Motor

    Efficient Power Usage

    Operates with a single USB cable for both power and control.

    Power consumption is approximately 120mAh @ 5V, allowing operation directly through the USB hub of a Cooled ASI Camera.

    Filter Compatibility

    1.25″ filters: No vignetting with telescopes up to an f/5 focal ratio.

    31mm filters: No vignetting with lenses up to f/2.

    ZWO EFW 8 x 1.25″/31mm Electronic Filter Wheel - Installation Instructions for 1.25 filters

    Installation Instructions - For 1.25" Filters

    1. Ensure filters are threaded (length < 3mm) or unthreaded (height < 7mm).
    2. Remove the back cover of the EFW.
    3. Lay the wheel flat and screw in the filters.
    4. Reattach the back cover.

    Installation Instructions - For 31mm Filters

    1. Use the included M2 screws and washers.
    2. Remove the back cover and lay the wheel flat.
    3. Carefully place filters into the designated recesses.
    4. Attach washers and secure with screws.
    5. Reattach the back cover.
    ZWO EFW 8 x 1.25″/31mm Electronic Filter Wheel - Installation Instructions - For 31mm Filters

    Ease of Use

    1. Connect the EFW via the included USB 2.0 cable.
    2. Install the ASCOM driver to begin operation.
    3. Control the EFW via ZWO Filter Wheel (1) or ZWO Filter Wheel (2), allowing simultaneous control of two EFWs within compatible software.

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