Ultra High Contrast UHC 1.25 inch telescope filter，Eliminates light pollution, Improves astrophotography contrast, Aluminum alloy frame, Stackable filter structure, Astronomical components workwarehouse NON SLIP HANDLE: Non-slip rubber

NON SLIP HANDLE: Non-slip rubber hand-grip for ease of use

and then turn to dim light again after about 37 seconds

Made of thick aluminium alloy and heavy duty spring

Detachable Screw Mount Bracket (included) 1

Ultra High Contrast UHC 1.25 inch telescope filter，Eliminates light pollution, Improves astrophotography contrast, Aluminum alloy frame, Stackable filter structure, Astronomical components workwarehouse NON SLIP HANDLE: Non-slip rubberUltra High Contrast UHC 1. 25 inch telescope filterEliminates light pollution, Improves astrophotography contrast, Aluminum alloy frame, Stackable filter structure, Astronomical components Product Features Multi layer optical coating,eliminates urban mercury and sodium lamps artificial light pollution, clearer celestial objects, higher the nebula contrast and astronomical photography image quality. 1. 25 inch telescope filter, standard thread M28.