SVBONY SV139 Telescope Filter Moon Filter Kit 1.25 inch ND4 ND8 ND16 ND1000 for Telescope Eyepiece Reduce Overall Brightness
by SVBONY
- 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, Use ND16 filter with 6.25% transmission when Gibbous Moon; the illuminated part of the moon that you can see decreases, and we say it's waning; the first week after full;It's very good effect to use the ND16 filter at this time, Use ND1000 filter with 0.10% transmission when Full Moon; you can see a full disk; it's very good effect to use the ND1000 filter at this time at the brightest time of the moon
