Check the listing for details. SVBONY 2'' Moon Filters Standard Filter Thread for Reduce Glare Moon Viewing. Condition: New. Listed at 21.99 USD. SVBONY Astronomy Telescope Eyepiece 2" Moon Filter for Observation of Moon and Planets This SVBONY Filter is a good moon viewing accessory. A broad spectrum of light transmission means it does not block as much as a DeepSky filter such as UHC, OIII or CLS. But is a good all-rounder filter suited to many applications, including the observation of the moon and planets (DeepSky filters are not designed for this). Features: Metal construction, comes in a clear hard case with foam lining Mild darkening of the sky background for enhanced contrast Reduces glare for the observation of the moon for a more comfortable viewing and to increase the ability to catch faint details Package Include: SVBONY 2" Moon Filter Sturdy Plastic Case This SVBONY Filter is a good moon viewing accessory. A broad spectrum of light transmission means it does not block as much as a DeepSky filter such as UHC, OIII or CLS. But is a good all-rounder filter suited to many applications, including the observation of the moon and planets (DeepSky filters are not designed for this). Features: Metal construction, comes in a clear hard case with foam lining Mild darkening of the sky background for enhanced contrast Reduces glare for the observation of the moon for a more comfortable viewing and to increase the ability to catch faint details The filter will fit all standard sized 2" eyepieces and accessories. It is mounted in a nicely anodized housing. Usage: The filter thread after thread eyepieces, rotate the filter into the eyepiece can be used Package: SVBONY 2" Moon Filter Sturdy Plastic Case about svbony