• Baader 1¼” Double Polarizing Filter – Perfect for observing full moon or bright planets, or for solar observations with a suitable front filter.
• For 1¼” eyepieces, is inserted into the standard filter thread. One part of the filter cell is rotatable, so that you can adjust the brightness to the magnification of the eyepiece.
• Both filters form a unit, to keep the filters perfectly aligned to each other – this double filter cannot be separated into to single filters. This way, the filter delivers high-contrast views even at high magnifications.
• Polarizing filters offer the highest flexibility, but if you are looking for better image quality, you should use a regular Neutral Density Filter, where there are fewer elements in the light path.

Please note: Polarizing filters (and all other eyepiece filters) must never be used without an appropriate solar filter such as a reflective front filter, Herschel Wedge, etc.).