The Orion UltraBlock is the ideal eyepiece filter for deep-sky observers located at highly light-polluted sites
Narrowband filter blocks all forms of light pollution
Enhances the presence of a significant number of fainter deep-sky objects
Compatible with threaded Orion 2" eyepieces. Metal filter cell construction.
Save yourself a trip to dark skies - with the UltraBlock filter you can enjoy the stars from the suburbs!