The 1.25″ Orion Variable Polarizing filter consists of two high-grade glass polarizing filters securely held in a rotating telescope eyepiece filter cell that allows you to vary the amount of light transmission over a wide range from 1% to 40%. Such control is highly desirable for lunar observing because the Moon’s brightness varies with its phase and with the aperture and magnification of the telescope you are using. For example, to view the Full Moon with any degree of clarity would require a significant amount of dimming, closer to the 1% transmission limit. On the other hand, when the Moon is a thin, waning crescent in the night sky, you’ll get the best results with minimal darkening, closer to 40% transmission. The Variable Polarizing Filter won’t change the Moon’s natural color, so your views will simply be optimized, not altogether altered.
The Orion Variable Polarizing 1.25″ eyepiece filter acts like a dimmer switch for your telescope, to tone down the brightness and accentuate the contrast of bright celestial objects
The Moon is one of the most enticing targets to view in the night sky. Thanks to its big, bright appearance and intriguing landscape features, the Moon is a favored sight by amateur astronomers all over the world. The Moon is in fact so bright with reflected sunlight, especially during a Full Moon, that it can overwhelm astronomers with distracting and view-degrading glare. The specialized 1.25″ Orion Variable Polarizing Filter for 1.25″ telescope eyepieces provides an elegant solution by toning down the brightness of the lunar surface so you can enjoy optimized contrast in each and every view of our nearest neighbor in the solar system.
Gives you much finer control of the image brightness compared to a standard fixed-transmission telescope eyepiece filter for optimal performance
Adjust the amount of light transmission from 1% to 40% by rotating the eyepiece filter housing
Consists of two high-grade glass polarizing filters in a 1.25″ rotating anodized aluminum cell
Threaded for use with any 1.25″ telescope eyepiece equipped with filter threads