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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Tele Vue BandMate H-Beta Filter
Tele Vue BandMate H-Beta Filter
Tele Vue BandMate H-Beta Filter
Tele Vue BandMate H-Beta Filter
Tele Vue BandMate H-Beta Filter

Tele Vue BandMate H-Beta Filter

by TeleVue
SKU TV-B2H-0200
$143.00 - $260.00
$260.00
$143.00 - $260.00
$260.00
Price Match Policy!
  • Filter Type: Hydrogen-Beta (Hβ) Narrowband
  • Available Sizes: 1.25" and 2" Mounted
  • Primary Targets: Horsehead Nebula, California Nebula
  • Manufacturing: Made in Germany by Astronomik for Tele Vue
  • Quality Control: Individually serialized and spectrograph-tested
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Tele Vue BandMate H-Beta Filter

    Available in both 1.25" and 2" formats, the Tele Vue BandMate H-Beta Filter is a specialized narrowband filter manufactured by Astronomik in Germany to isolate the critical hydrogen-beta emission line. This filter is the key to observing notoriously difficult targets like the Horsehead Nebula (Barnard 33) and California Nebula (NGC 1499), which are very hard to see without it, even from a dark site.

    Isolating H-Beta: Unveiling the Horsehead & California Nebulae

    The H-Beta filter is a highly specialized tool designed for a single purpose: to pass the aqua-colored hydrogen-beta emission line common to a select few, but scientifically significant, nebulae. By aggressively blocking all other wavelengths, it dramatically increases the contrast of these faint objects, making them detectable.

    This filter is particularly effective on large, diffuse targets that can fill the field of view of a wide-angle eyepiece. Unlike general-purpose "light pollution" filters, the H-Beta is an indispensable key for unlocking specific deep-sky challenges that are impossible without it.

    A Two-Stage, Serialized Inspection Standard

    To meet Tele Vue's stringent requirements, every BandMate filter undergoes a rigorous, multi-stage quality control process. Each filter is produced for Tele Vue by Astronomik in Germany, using German-sourced materials, and is individually serialized to track its inspection results.

    • Spectrographic Test: Astronomik tests each filter on a spectrograph to guarantee the coating's transmission curve meets the precise H-Beta specification.
    • Optical Test: Tele Vue performs a second, independent test at high power to ensure the filter introduces no degradation to the image.
    • Mechanical & Cosmetic Inspection: Each filter is inspected for mechanical fit and cosmetic defects like pinholes or sleeks, ensuring flawless build quality.

    H-Beta vs. OIII: Targeting Different Nebulae

    Beginning observers often wonder whether to start with an H-Beta or an OIII filter. While both are narrowband filters, they target completely different classes of celestial objects, making them complementary tools rather than competitors.

    • Tele Vue H-Beta Filter: This is a specialist's filter for hydrogen-emitting targets. Its primary use is for the Horsehead Nebula, California Nebula, and a few others. It is not a general-purpose nebula filter.
    • OIII Filter: An Oxygen-III filter is more versatile, enhancing contrast on a much wider variety of objects, including most planetary nebulae like the Dumbbell Nebula (M27) and supernova remnants like the Veil Nebula (NGC 6960).

    For most observers, an OIII filter is the better first choice. The H-Beta is the logical next step for those specifically seeking to conquer the famous, yet challenging, targets that require it.

  • What makes the Tele Vue BandMate H-Beta filter essential for certain nebulae?

    The Tele Vue BandMate H-Beta filter isolates the specific 486nm wavelength of light emitted by ionized hydrogen. Objects like the Horsehead Nebula and California Nebula radiate strongly at this wavelength but are extremely faint visually. This filter darkens the sky background significantly, allowing the faint structure of these specific nebulae to become visible.

    Will the Tele Vue H-Beta filter help me see the Horsehead Nebula (Barnard 33) from my suburban backyard?

    It helps, but a suburban sky makes it very hard. The Horsehead Nebula is famously difficult even from a dark site; the H-Beta filter provides the contrast that can make it detectable there, on a dark, moonless night. For best results, use it with a larger aperture telescope (8" or more) and a low-power, wide-field eyepiece to frame the object against the brighter nebula IC 434.

    I have a wide-angle 2" eyepiece. Is the Tele Vue H-Beta filter effective for the California Nebula (NGC 1499)?

    Absolutely. The California Nebula is a very large object that requires a wide true field of view to see in its entirety. The Tele Vue H-Beta filter is designed to perform well even with wide-angle eyepieces, maintaining image quality across the field while providing the critical contrast needed to trace the nebula's faint outline.

    Why is the Tele Vue H-Beta filter tested by both Astronomik and Tele Vue?

    This dual-testing protocol ensures uncompromising quality. Astronomik, the manufacturer, uses a spectrograph to verify that the filter's transmission curve is precisely centered on the H-Beta line. Tele Vue then conducts its own high-power optical tests to confirm the filter will not degrade the sharp images their eyepieces and telescopes produce. Each filter is also serialized for quality tracking.

    Should I buy a Tele Vue H-Beta filter or an OIII filter first?

    For most observers, an OIII filter is the better first choice as it enhances a much wider range of objects, particularly planetary nebulae and supernova remnants. The H-Beta filter is a more specialized tool for a limited list of targets. It is an essential second filter for dedicated observers wanting to log challenging objects like the Horsehead Nebula.

    Is the Tele Vue BandMate H-Beta filter threaded for standard eyepieces?

    Yes. The Tele Vue BandMate H-Beta filter is available in both 1.25" and 2" sizes, and each version is threaded to screw directly into the barrel of any standard eyepiece or accessory of the corresponding size.

  • Filter Type Narrowband, Hydrogen-beta (Hβ)
    Available Sizes 1.25" and 2" Mounted
    Manufacturer Astronomik, Germany (for Tele Vue)
    Primary Targets Horsehead Nebula, California Nebula, and other hydrogen-emitting nebulae
    Quality Control Optically, spectrographically, mechanically, and cosmetically tested
    Serialization Yes, each filter is individually serialized

    • Tele Vue BandMate H-Beta Filter (1.25" or 2", as selected)

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  • Tele Vue Warranty