ND 96 Moon Filter (0.9 density; 13% transmission): The neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4" an... [more]

Variable Polarizing Filter (1.25 inch) For glare-reduction in observing the Moon the Variable Polarizer includes two Polarizer filters mounted in a specially-machined cell. The filter permits variable settings of the light transmission between 5% and 2... [more]

1.25" Orion Variable Polarizing Telescope Filter       * Variable polarizing filter acts like a dimmer switch for your telescope, to tone down brightness     * Reduced brightness and glare unmasks detail in y... [more]

Variable Polarizing Filter, 2"       * Variable polarizing filter acts like a dimmer switch for your telescope, to tone down brightness     * Reduced brightness and glare unmasks detail in your viewing subjec... [more]

Moon Filter, 13% Tranmission, 2"       * Orion Moon filter reduces glare so you can see more lunar detail and surface features     * Filter allows transmission of only 13% of the reflected light.  &nb... [more]

This set of two polarizer filters reduces reflected polarized light in the Earth's atmosphere. Also helpful for splitting binary stars by reducing glare and diffraction around the brighter star of the binary pair. On moon and planets it is invalu... [more]