Designed to deliver high-contrast views of emission nebulae, without excessive dimming of the view. Performs well in our 70mm and larger binoculars that are threaded for filters, though the greatest benefit will be seen in 100mm and larger models. Also performs extremely well in telescopes. Each filter comes with its own padded plastic case. Sold individually.
Below is a transmission curve for the Garrett Optical Broadband Nebular Filter:
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