SVBony Telescope Filter

The 1.25" moon and skylow 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 - It also will suppress sky glow from artificial lighting and background ...The 1.25" moon and skylow 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 - It also will suppress sky glow from artificial lighting and background glow reflected when the moon is up - 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 - The filter effectively filters out selective wavelengths of low-pressure sodium and other man-made sources typically used in street lighting;it enhances the views of deep-sky objects by increasing the contrast of these objects against the background sky - While nebula filters transmit only a few select wavelengths corresponding to various atomic lines;this filter transmits a large portion of the continuous spectrum while blocking a few select lines of the more common man-made light - Neodymium provides a unique;selective;blocking feature in that this element greatly reduces glare without reducing ant color and brightness variations - Main points:1.25" skyglow moon filter for telescope eyepiece cutting light pollution Effectively filters out selective wavelengths of low-pressure sodium and other man-made sources - Premium quality metal rim thread blue glass lens - Fits all standard sized 1.25" eyepieces and accessoriesge:the filter thread after thread eyepieces;rotate the filter into the eyepiece - Specification:Lens material: pure optical glass lens - Sleeve material: metal - Caliber: 1.25"/31.7mm - Total item length (including external thread): 0.39"/ 10mm - Total item length (excluding external thread): 0.28"/ 7mm - Clear aperture: 0.94"/ 24mm - Filter thread: M28.5x0.6Weight: 0.25oz/7g - Package include:1 x SVBONY moon and sky glow filter 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 1.25" skyglow and moon filter for telescope eyepiece cutting light pollution;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 The filter effectively filters out selective wavelengths of low-pressure sodium and other man-made sources typically used in street lighting. Although it is not a nebula filter, it enhances the views of deep-sky objects by increasing the contrast of these objects against the background sky