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SVBONY 2inch Eyepiece Filter H-Beta 25nm Visual Nebulosity Telescope Filters For Sale


SVBONY 2inch Eyepiece Filter H-Beta 25nm Visual Nebulosity Telescope Filters



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SVBONY 2inch Eyepiece Filter H-Beta 25nm Visual Nebulosity Telescope Filters:
$69.99

The H-Beta filter is a narrowband filter specially designed for visual inspection. It is mainly aimed at the 486nm (blue) line spectrum nebula. It filters out the interference of other light and can improve the contrast of the nebula. During visual observation, in order to see a sufficiently dark nebula, it is necessary to ensure a large enough luminous flux, and it needs to be observed with a large-aperture telescope. It is not recommended to use a small-aperture telescope for observation. The beta line of hydrogen with a central wavelength of 486nm in H-Beta is suitable for observing the difficult-to-capture Horsehead Nebula in Orion and the California Nebula. Through the use of filters, the Horsehead Nebula can be clearly seen. Filter with metal mount 2" filter threads;

The H-Beta filter is a narrowband filter specially designed for visual inspection. It is mainly aimed at the 486nm (blue) line spectrum nebula. It filters out the interference of other light and can improve the contrast of the nebula. During visual observation, in order to see a sufficiently dark nebula, it is necessary to ensure a large enough luminous flux, and it needs to be observed with a large-aperture telescope. It is not recommended to use a small-aperture telescope for observation. The beta line of hydrogen with a central wavelength of 486nm in H-Beta is suitable for observing the difficult-to-capture Horsehead Nebula in Orion and the California Nebula. Through the use of filters, the Horsehead Nebula can be clearly seen. Filter with metal mount 2" filter threads; Threaded to fit 2" eyepieces and threaded diagonal barrels

Package Includes:

  • SVBONY 2" H-Beta 25nm Filter
  • Sturdy Plastic Cases
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