With the Antlia V-Pro UV/IR Block Filter (2"), your astronomical images will be free of distracting halo effects, stars will become more pinpoint, contrast will increase and colours will be more vibrant.
Cameras' sensors can see and focus in the UV and IR wavelengths, unlike our eyes, but these wavelengths are not focused where visible light is focused. The result is a lifeless patch around stars called a halo.
When do you need to use a UV/IR filter? Well, for one thing, if your camera doesn't have this type of filter built in, you will definitely need it. In principle, you should only use it for lensed acromatic or apochromatic binoculars, but mirrored systems often use glass optical elements, barlow lenses, coma correctors, so in most cases you will need the filter for these types of binoculars as well.
The Antlia V-Pro UV/IR block filter is one of the most professional UV/IR block filters available, because believe me there is a difference between a filter and a filter.