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ZWO 1.25" Duo Band Filter

SKU : ZWO-DB125

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  • Efficient and affordable narrowband imaging for color cameras.
  • Perfect for beginner narrowband imagers.
  • H-alpha Bandwidth: 15nm.
  • OIII Bandwidth: 35nm.
  • 1.25-inch Filter Size.

 

Product Details

  • The ZWO Duo Band Filters are designed to complement their large selection of color cameras. This dual-band filter is perfect for those astronomers who are already imaging using color cameras and don't want to transition to a monochrome camera set, requiring the addition of a filter wheel and narrowband set to complete the system. Be the efficient astronomer with ZWO's Duo Band Filters!

    Efficient Color Camera Imaging

    The ZWO Duo-Band filters are an excellent way for beginning astronomers to dive deep into the realm of narrowband imaging. Along with being focused on the H-alpha and OIII wavelengths, these filters are also a fantastic solution to dealing with light pollution that is becoming more and more prevalent. On top of this, the Duo-Band filters further improve the contrast and visibility of whichever deep-sky objects you're hoping to image using a color camera. Narrowband imaging doesn't get more convenient than this, especially at such impressive transmission rates of 80% (H-alpha) and 90% (OIII) for its two bandpasses.

    ZWO Duo Band Filter Transmission Rates

    Designed for Compatibility

    Thanks to the design of these dual-band filters, essentially any camera or filter wheel that is compatible with 1.25-inch or 2-inch filters (depending on which size you purchase) can use these without a problem. The only real restraint, which is hardly a restraint to begin with when it comes to narrowband imaging, is that these are not suitable for wide-angle or ultra-wide-angle lenses because the incident angle should be less than 8 degrees for light passing through. For just about every night sky imager in the world, this will never be a problem.

    Main Features of ZWO Duo-Band Filters

    • H-alpha Bandwidth: 15nm.
    • OIII Bandwidth: 35nm.
    • Made with Schott and Aerometal materials through CNC machining.
    • Extinction treatment to prevent reflection.
    • Dual bandpasses for convenient narrowband imaging.
  • specifications

    Bandpass15nm
    Bandpass35nm
    Filter ShapeRound
    Filter Thickness1.85mm
    Filter TypeH Alpha
    Filter TypeMultiband
    Filter TypeOIII
    Free ShippingYes
    Size1.25"
  • included items

    • Efficient and affordable narrowband imaging for color cameras.
    • Perfect for beginner narrowband imagers.
    • H-alpha Bandwidth: 15nm.
    • OIII Bandwidth: 35nm.
    • 1.25-inch Filter Size.

     

Product Reviews

Customer Reviews
4.7 Based on 3 Reviews
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Filter Reviews:
  • m42 @
  • canon t3
  • ZWO ASI120MC
  • Horsehead Nebula
  • home backyard
  • definition
  • light pollution
  • color camera
  • some
  • filter
A
02/24/2021
Anonymous
United States United States
zwo duo band filter

seems to work well . used on canon t3 with RC6 shot m42 @ prime focus, decent definition in pic. thank you for the follow up. jrb

OPT Telescopes ZWO 1.25 Duo Band Filter Review
IF
01/18/2021
Ian F.
United States United States
Good Company to deal with

Fast, accurate, reasonably priced service and products

A
12/26/2020
Anonymous
Mexico Mexico
Great quality product.

This filter is absolutely amazing. I’ve taken some of the best pictures like the Horsehead Nebula in light pollution through my ZWO ASI120MC color camera in my home backyard with amazing results!!

OPT Telescopes ZWO 1.25 Duo Band Filter Review