SVBONY 1.25 inches Planetary Filter Bundle with SV139 Telescope Moon Filter Kit ND4 ND8 ND16 ND1000

SVBONY 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. Mild effect of darkening background of the night sky: So that the fainter objects is more clearly seen contrasted against the blackness of space. Effectively filters out stray light: Filtering Selective wavelengths of low-pressure sodium and other man-made sources typically used in street lighting. It's very good effect to use the ND8 filter In this two time period. Gibbous Moon - From now on, until it becomes new again, the illuminated part of the Moon that we can see decreases, and we say it's waning. The first week after full, it is called waning gibbous. It's very good effect to use the ND16 filter at this time. Full Moon - Two weeks after the new moon, the moon is now halfway through its revolution, and now the illuminated half coincides with the one facing the Earth, so that we can see a full disk: we have a full moon. It's very good effect to use the ND1000 filter at this time.

• 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
• 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 1.25" Neutral Density Moon filter kit;Reduces glare so you can see more lunar detail and surface features with your telescope;Will not alter the natural color of the Moon
• Use ND4 filter with 25% transmission when Waxing Crescent Moon;As the Moon moves around the Earth; you get to see more and more of the illuminated half;It's very good effect to use the ND4 filter at this time
• Use ND8 filter with 12.5% transmission when Last and First Quarter Moon;It's very good effect to use the ND8 filter In last quarter and the first quarter phase