LP-1  Oxygen III	LP-3  Oxygen III	LP-3  Hydrogen Beta	LP-4  Hydrogen Beta

Tele Vue Filters

2" Nebustar (UHC)	2" OIII	1.25" Mars "A"
1.25" Nebustar (UHC)	1.25" OIII	1.25" Mars "B"

Features of Tele Vue 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 Nebustar Filter

High-performance, dielectric, squarewave "UHC" type general purpose narrow-band filter great for all nebulae types and instrument sizes.  Red blocking allows brighter, sharper star images not plagued with red fringing seen on most filters of this type.  Highest transmission in critical bands

Bandmate OIII Filter

This OIII filter particularly enhances planetary nebulae in larger telescopes.  Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images.  Ion beam technology and optical glass produces low scatter in a hard stable coating to reduce changes due to temperature and humidity.

Bandmate Mars Filters

Tele Vue offers two contrast enhancing filters specifically designed for viewing Mars, but also quite useful on Jupiter.  Why two filters? Traditionally, standard colored filters have been used to bring out detail on the planet's surface.  The main drawback is the artificial color imposed on all planetary features.

Type A  The Type-A is a dual band filter with different dielectric coatings on each side of the substrate.  The dual band nature of the filter permits green and red through while rejecting all other visible colors.  The effect is to enhance detail on the Martian surface while preserving the natural color of the polar caps and rest of the surface.  Since this filter provides a most natural view, it is highly recommended for public viewing.

Type B  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.

Nebustar or OIII  2"        $185.00        Shipweight 1/2 lb.

Nebustar or OIII  1.25"     $95.00        Shipweight 1/2 lb.

Mars "A" 1.25"               $115.00        Shipweight 1/2 lb.

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