TeleVue - Bandmate Mars TYPE B Filter

Bandmate™ Mars Type-B Filter

The Bandmate™ Mars Type-B filter is a high efficiency, single band dielectric coating that achieves penetrating views of the Martian surface. The surface appearance is similar to that of the popular #21 filter. However, the Type-B features a broadband anti-reflection coating on one side and filter coating on the other that makes it far more efficient.

Bandmate™ filters yield bright, sharp and contrasty images - even in the optically sensitive position in front of the diagonal. Optical glass and red filtering allows for sharp and bright views of nebulae with embedded star clusters - such as the Lagoon Nebula (M8).

Features of TeleVue Bandmate™ Filters * Optical grade BK7 glass to insure no image degradation due to the substrate. * Ion beam deposition of the coatings produces hard, stable coatings to reduce changes due to temperature and humidity. * Dielectric filter for high transmission and blocking of unwanted wavelengths provide high contrast images. * Aluminum filter cells precision machined and laser etched.