Astronomical filters Binorum

Astronomical filters despite their seeming simplicity have extraordinarily high demands on production quality. Optical glass, the main operating part of an astronomical filter, has to be produced with absolutely parallel edges and can not contain microscopic foreign debris.
Filters are made from high quality optical glass using ultra modern Binorum equipment and are covered by fully multilayered coatings. Each batch of filters is tested and inspected after production to meet our highest standards, and is given an accompanying bandwidth chart. Each Binorum filter is verified manually