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SKU : ZWO-DB125
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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!
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.
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.
specifications
Bandpass | 15nm |
Bandpass | 35nm |
Filter Shape | Round |
Filter Thickness | 1.85mm |
Filter Type | H Alpha |
Filter Type | Multiband |
Filter Type | OIII |
Free Shipping | Yes |
Size | 1.25" |
included items
Fast, accurate, reasonably priced service and products