Filters Blue Typ 2c 2"

The frame allows the filter to be attached to a connector, a filter holder or in the housing of a camera.

A standard measurement for accessories, expressed as 2 inches. 2" is equal to 50.8 millimetres.

The optical elements are treated with ultra-thin coatings. Among others, there are anti-reflective coatings for reducing, and dielectric coatings for increasing reflection.

Used to connect a filter to the accessory.

No matter whether they are for observing or for astrophotography, filters are very important accessories.