2" Variable Polarizing Filter This variable polarizing filter acts like a dimmer switch for your telescope, toning down the brightness of the Moon or planets to a comfortable level and revealing more surface details. You often find considerable differences in detail brightness on objects of the Solar System. This is particularly noticeable when observing: - Moon craters which are close to the lunar terminator - Sun spots and faculae.
Caution: only to be used in association with an appropriate solar filter on the front of your telescope! - Details on planets Irradiation from brighter regions prevents you from distinguishing fine details. Variable polarizing filters allow you to selectively adjust the level of darkening.
Capacity: Connection
(to the telescope): 2"
Type: Polarizing filter
Mount material: Aluminium
Color: neutral grey
Transmission: 1(variable from 1% to 40%)
Frame: 2"