TeleVue Filters 2" H-Beta Bandmate Type 2 filter (57799)

TeleVue 2" H-Beta Bandmate Type 2 Filter (Model 57799)

The TeleVue Bandmate Type 2 H-Beta filter is part of a premium filter series designed to deliver consistent optical performance and precise mechanical fit. Manufactured under strict quality control standards, these filters offer uniformity and reliability that exceed typical market alternatives. All materials are sourced in Germany, ensuring high production standards from the outset.

Each Bandmate filter undergoes comprehensive testing. TeleVue performs high-magnification optical testing to confirm that no image degradation is introduced. Astronomik verifies the coating accuracy using spectrographic analysis to ensure the filter meets exact design specifications. In addition, every filter is mechanically checked for proper fit and cosmetically inspected for surface imperfections such as pinholes or blemishes. This thorough quality assurance process guarantees dependable performance for both visual observers and astrophotographers.

The H-Beta filter is a narrowband line filter designed to isolate the hydrogen-beta emission line. By transmitting only a very narrow wavelength band and blocking most other light, it enhances contrast in specific emission nebulae and reduces the effects of light pollution. This makes faint nebular structures more visible and improves photographic results under challenging sky conditions.

Technical Specifications
Telescope connection: 2"
Frame size: 2"
Mount material: Aluminum
Optical coating: Multi-coated

General Information
Series: Bandmate Type 2
Type: Filter
Design: Line filter

Applications
Anti light-pollution: Yes
Suitable for astrophotography: Yes