Svbony Moon Filter 12.5% ND8 1.25"
Tax included.
The Svbony neutral density moon filter is a standard accessory for lunar observing, which blocks 87.5% of the light passing through it, allowing 12.5% of the light to pass through to the eyepiece.
This is a high quality unit with plane polished optical glass surfaces, and a very even, neutral light transmission with no influence on colour of the image. It should not be confused with cheaper green filters.
Svbony ND8 12.5% Moon Filter Specifications:
- 12.5% transmission, ideal for viewing the moon when its half phase or less, or with with a refracting telescopes of 100mm 4" aperture or smaller, and reflecting telescopes of 5" 127mm or smaller.
- Reduces glare to improve contrast and bring out more fine details, such as smaller craters, ray patterns and "Lunar Seas" or "Mare".
- Incorporates quality optical glass with flat polished parallel surfaces, accurately installed in a metal cell.
- Neutral grey - does not affect colour like cheaper green filters.
- Threaded to fit standard 1.25" astronomy eyepieces (M28x0.5mm thread).
- Includes plastic case.
Why use a moon filter? Telescopes (even the smallest ones) gather so much light, that the moon is sometimes just too bright for comfortable observing. Fine details like lunar seas get washed out in the glare. This premium quality filter removes excess glare from lunar images, bringing out finer detail. It's threaded to fit into the base of standard 1.25" barrel astronomy eyepieces. (M28x0.5 thread).
