Optical glass lens; significantly reduces light pollution; great for city and suburban observation
1.25'' barrel diameter simply attach to eyepiece cased in a sturdy transparent case;standard filter thread for 1.25" eyepieces and other accessories
SVBONY 1.25" Moon filter for telescope eyepiece; 5.The filter has a mild effect of darkening the background of the night sky so that the fainter objects are more clearly seen contrasted against the blackness of space
Premium quality metal rim and thread with blue glass lens; the filter will fit all standard sized 1.25" eyepieces and accessories; it is mounted in a nicely anodized housing and is threaded on both sides for stacking with other filters if necessary
1.25" moon and skyglow filter is a multi band pass filter transmitting a high percentage of light in the visual spectrum; the filter enhances contrast when observing brighter objects including the moon and planets