The Duo-Band filter offers an economical entry into the world of narrowband imaging and can also offer a practical solution to imaging in light polluted urban areas.

The dual band pass nature of the Duo-Band filter passes light at Hα (656nm) and OIII (500nm) wavelength, and can reduce the interference from natural light sources such as moonlight, or artificial light pollution such as street lighting.

It can help improve the contrast and visibility of deep sky objects such as emission nebula using a OSC (One Shot Colour) camera.

If you are looking for a solution to deep sky photography in light pollution area, then ZWO Duo-Band Filter will be a great choice.

The Duo-Band filter can be used with all ASI cameras and EFW Electronic Filter Wheel and comes in 1.25” and 2” sizes.

Precision CNC machined from Aircraft grade alloys,hard anodised finished Cell with Laser engravings, finely polished optical surface to ensure 1/4 wavefront and <30 arc seconds parallelism over the both surfaces. Precise double sided coatings with anti-reflection coatings.

ZWO Duo-Band Filter Technical Specification:

  • Size: Standard 1.25”
  • Thickness: 1.85 mm
  • Bandwidth: HA (15nm) OIII (35nm)
  • Surface quality: 60/40 (Refer to MIL-O-13830)
  • Schott substrate material
  • More than 90% transmission at major OIII line 486.nm1, 496nm and 501nm.
  • More than 80% transmission at Ha line 656.3nm

Note:  The incoming light transmitted through the filter should be perpendicular to the filter, or the incident angle should be less than 8°. Therefore, this product is not suitable for wide-angle or ultra wide-angle lenses.

DUO Band Incident Angle
Recommended DUO Band Incident Angle

Test Results

Images captured with ASI color cameras and Duo-Band Filters. You can see that the potential for deep space photography in strong light polluted areas is vastly improved with the Duo-Band filters.

ZWO DB Band Pass

All our products are shippable. In all cases, full payment is required before our products are shipped. Currently Sidereal Trading Pty Ltd only ships to Australia, Australian Territories and New Zealand.

Deliveries are made via Registered Australia Post or TNT Australia. Tracking information and updates will be sent to the email address associated with the order. A link to the courier’s website tracking information may also be provided. All small items will be shipped via Australia Post – Parcel Post or if requested via Express Parcel Post. All large items will be Shipped via TNT Road Express or TNT Economy Express Export. Should you require Express Post for your order, please contact our staff to confirm any additional charges that may apply.

You may be required to sign for the delivery to confirm proof of receipt. If you are not there when the delivery is made, you may incur further charges from Australia Post or TNT Australia (not from Sidereal Trading Pty Ltd) to pick up the parcel from the nearest post office or depot.
Our Flat Rate delivery charges are determined per order depending on the category your products fall into. This will be specified once a postcode is entered at checkout.

Remote delivery destinations or other factors may cause the web-based shopping cart to underquote the shipping charges. Some regional areas of Australia and New Zealand will incur higher charges than specified at checkout. When this occurs, we will first contact you to confirm payment of the difference, or subsequently cancel the order and refund any payments made if this additional cost is prohibitive. At any time if you feel the shipping calculation does not seem correct, please contact us via phone or email so that we can fix the problem and raise the order for you with the correct shipping amount.

In-Store Pick Up is also possible. See Contact Us for Store Location.

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Be the first to review “ZWO Duo-Band Filter 1.25 inch”

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ZWO Duo-Band Filter 1.25 inch

SKU: ZWO-DB1.25

$149.00

Call (03) 9042 2293 to check Availability

✅ Free Shipping over $400
✅ Expert Advice
✅ Australian Owned
✅ Lifetime Technical Support

    Need Expert Advice?

    Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

    Enquire now or call us (03) 9042 2293

    ZWO Duo-Band Filter 1.25 inch

    SKU: ZWO-DB1.25

    $149.00

    Call (03) 9042 2293 to check Availability

    The Duo-Band filter offers an economical entry into the world of narrowband imaging and can also offer a practical solution to imaging in light polluted urban areas.

    The dual band pass nature of the Duo-Band filter passes light at Hα (656nm) and OIII (500nm) wavelength, and can reduce the interference from natural light sources such as moonlight, or artificial light pollution such as street lighting.

    It can help improve the contrast and visibility of deep sky objects such as emission nebula using a OSC (One Shot Colour) camera.

    If you are looking for a solution to deep sky photography in light pollution area, then ZWO Duo-Band Filter will be a great choice.

    The Duo-Band filter can be used with all ASI cameras and EFW Electronic Filter Wheel and comes in 1.25” and 2” sizes.

    Precision CNC machined from Aircraft grade alloys,hard anodised finished Cell with Laser engravings, finely polished optical surface to ensure 1/4 wavefront and <30 arc seconds parallelism over the both surfaces. Precise double sided coatings with anti-reflection coatings.

    ZWO Duo-Band Filter Technical Specification:

    • Size: Standard 1.25”
    • Thickness: 1.85 mm
    • Bandwidth: HA (15nm) OIII (35nm)
    • Surface quality: 60/40 (Refer to MIL-O-13830)
    • Schott substrate material
    • More than 90% transmission at major OIII line 486.nm1, 496nm and 501nm.
    • More than 80% transmission at Ha line 656.3nm

    Note:  The incoming light transmitted through the filter should be perpendicular to the filter, or the incident angle should be less than 8°. Therefore, this product is not suitable for wide-angle or ultra wide-angle lenses.

    DUO Band Incident Angle
    Recommended DUO Band Incident Angle

    Test Results

    Images captured with ASI color cameras and Duo-Band Filters. You can see that the potential for deep space photography in strong light polluted areas is vastly improved with the Duo-Band filters.

    ZWO DB Band Pass

    All our products are shippable. In all cases, full payment is required before our products are shipped. Currently Sidereal Trading Pty Ltd only ships to Australia, Australian Territories and New Zealand.

    Deliveries are made via Registered Australia Post or TNT Australia. Tracking information and updates will be sent to the email address associated with the order. A link to the courier’s website tracking information may also be provided. All small items will be shipped via Australia Post – Parcel Post or if requested via Express Parcel Post. All large items will be Shipped via TNT Road Express or TNT Economy Express Export. Should you require Express Post for your order, please contact our staff to confirm any additional charges that may apply.

    You may be required to sign for the delivery to confirm proof of receipt. If you are not there when the delivery is made, you may incur further charges from Australia Post or TNT Australia (not from Sidereal Trading Pty Ltd) to pick up the parcel from the nearest post office or depot.
    Our Flat Rate delivery charges are determined per order depending on the category your products fall into. This will be specified once a postcode is entered at checkout.

    Remote delivery destinations or other factors may cause the web-based shopping cart to underquote the shipping charges. Some regional areas of Australia and New Zealand will incur higher charges than specified at checkout. When this occurs, we will first contact you to confirm payment of the difference, or subsequently cancel the order and refund any payments made if this additional cost is prohibitive. At any time if you feel the shipping calculation does not seem correct, please contact us via phone or email so that we can fix the problem and raise the order for you with the correct shipping amount.

    In-Store Pick Up is also possible. See Contact Us for Store Location.

    Reviews

    There are no reviews yet.

    Be the first to review “ZWO Duo-Band Filter 1.25 inch”

    Your email address will not be published. Required fields are marked *

      Need Expert Advice?

      Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

      Enquire now or call us (03) 9042 2293