Astrodon 50mm Clear Filter w/o NIR Blocking Unmounted

Don Goldman 50 mm Clear filter with no NIR-blocking. Color Filter set pictured. A Clear filter that is parfocal with the other filters. This is UV-blocked and has >95% transmittance out to the extent of the CCD detector range. As such, it has excellent, anti-reflective (AR) hard coatings. Also it has 1/4 wave or better propagated wavefront. Comes in black anodized screw-in holders that fit most filter wheels.