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ZWO Seestar S30 Desktop
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Holiday Schedule: We’ll be taking a short break from December 24th to December 29th to enjoy the holidays. During this time, the store will be closed, no orders will be shipped, and support will be unavailable. Happy Holidays!
ZWO Electronic Filter Wheel EFW Gen2 - 5 x 1.25"

ZWO Electronic Filter Wheel EFW Gen2 - 5 x 1.25"

by ZWO
SKU ZWO-EFW-5x1.25-25
CA$279.00 - CA$279.00
CA$279.00
CA$279.00 - CA$279.00
CA$279.00
Price Match Policy!
  • 5x positions
  • Compatible with 1.25" and 31mm filters
  • Anti Light Leak Design
  • Modern USB-C Interface
Availability:
Backordered
Contact us to know when we will receive our next ones!

Free Shipping in Canada*

More information

  • Description
  • Specifications
  • In the Box
  • Downloads

  • ZWO Electronic Filter Wheel (EFW) Gen 2 Overview

    ZWO EFW Gen2 Highlights

    The next generation ZWO EFW Gen 2 brings a series of subtle but meaningful upgrades for astrophotographers who want dependable, automated filter management. Its redesigned internal structure reduces light leakage, the mechanics rotate more smoothly, and the exterior has been streamlined for a cleaner, more modern look. Nothing flashy. Just better where it counts, so your workflow stays stable, reliable, and quietly improved.

    ZWO EFW Gen2 Anti Light Leak Design

    Anti Light Leak Engineering

    Long exposures demand strict control over stray light. The Gen 2 EFW introduces several structural improvements.

    Upgraded Sealing Structure

    A redesigned slot fit chassis tightens the interface between the top and bottom covers, reducing potential ingress points.

    Dual Light Blocking Pads

    New lateral light blocking pads add an extra shield, helping maintain clean, uniform frames during long integrations.

    Fully Enclosed Motor Compartment

    The motor housing is now sealed, increasing both light isolation and environmental resistance for more stable, long term operation.

    Filter Compatibility

    Filter Compatibility

    • 1.25" Mounted Filters: Compatible with mounted filters where the unthreaded part of the filter cell measures less than 7mm, and the threaded part less than 2.7mm.
    • 31mm Round Filters: Compatible with unmounted filters that are 1.5 to 3.5 mm thick
    ZWO EFW Gen2 Automated Filter Switching

    Automated Filter Switching

    The motorized, bidirectional system enables fully automated filter changes. When paired with ASIAIR or other supported software, the EFW can change filters seamlessly during a scheduled sequence. This is ideal for unattended, multi filter imaging sessions.

    Software Support

    The motorized, bidirectional system enables fully automated filter changes. When paired with ASIAIR or other supported software, the EFW can change filters seamlessly during a scheduled sequence. This is ideal for unattended, multi filter imaging sessions.

    • ASIAIR
    • ASIStudio
    • ASCOM
    • ZWO SDK
    ZWO EFW Gen2 Interface Optimizations

    Refined Exterior and Interface Upgrades

    • Cleaner, more modern look with laser engraved details
    • Streamlined exterior for a cohesive, professional appearance
    • USB C interface replaces the legacy USB B port for a more robust, reliable, and convenient connection
    ZWO EFW Gen2 Lightweight, Rigid Construction

    Lightweight, Rigid Construction

    • CNC machined aluminum alloy body for excellent strength at lower weight
    • Internal filter carousel made from 6061 aluminum alloy for durability and smooth rotation
    • High precision stepper motor ensures consistent indexing and long term reliability

  • Slots

    5x

    Supported Filters

    1.25" Mounted Filters: Compatible with mounted filters where the unthreaded part of the filter cell measures less than 7mm, and the threaded part less than 2.7mm.

    31mm Round Filters: Compatible with unmounted filters that are 1.5 to 3.5 mm thick

    Effective Thickness

    20mm

    Weight

    300g

    Interface

    USB-C

    Power Consumption

    120mA at 5V
    • EFW Body

      EFW Body

      × 1

    • 1.25 Dust Cap

      1.25" Dust Cap

      × 1

    • 1.25 Dust Plug

      1.25" Dust Plug

      × 1

    • M42M-M42M 2mm Adapter

      M42M-M42M 2mm Adapter

      × 1

    • 1.25 M42M Nosepiece

      1.25" M42M Nosepiece

      × 1

    • M2.5 6mm Screws

      M2.5 6mm Screws

      × 6

    • M2 4mm Screws

      M2 4mm Screws

      × 26

    • M4 12mm Screws

      M4 12mm Screws

      × 2

    • Phillips Screwdriver

      Phillips Screwdriver

      × 1

    • T2-1.25

      T2-1.25" Holder

      × 1

    • Filter Masks

      Filter Masks

      × 10

    • 0.5m USB 2.0 Cable

      0.5m USB 2.0 Cable

      × 1

    • 2m USB 2.0 Cable

      2m USB 2.0 Cable

      × 1