TeleVue - Bandmate Mars TYPE B Filter

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. 

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.