IDAS RS Filters Updated

The IDAS RS (Reflection Suppression) filters have been updated with UV blocking coatings, eliminating the need for an additional blocker in refractors.  Unmounted filters are available in 31mm and 50mm sizes.  Check the RS filter page for more technical information.

Hutech Reflection Suppression (RS) Filters

We are happy to announce that after a lot of work designing and testing our much-anticipated Reflection Suppression (RS) filters for CCD imaging, we are seeing great results! Check out these results from Jim Windlinger (Horsehead Nebula) and Alan Smallbone (M45).  Click on the thumbnail images to see enlargements. Additional technical information including bandpass plots and comparison photos are available on the Hutech RS Filter page.