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Orion 5657 - per SC UltraBlock Narrowband Ingrandisci

Orion 5657 - per SC UltraBlock Narrowband

Orion USA

Orion UltraBlock Narrowband Filter SC Thread 

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OR5656

Disponibilità: disponibile in 24/48 ore

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159,00 € 159 EUR 2020-09-13

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Codice articolo: OR5656

Orion UltraBlock Narrowband Filter SC Thread

If you observe from highly light-polluted sites, or if you want the maximum contrast enhancement in observing faint emission nebulas from areas of moderate light pollution, an Orion UltraBlock telescope filter is for you. With an UltraBlock, emission and planetary nebulas are even visible from urban areas, where they are completely invisible without a filter! In darker-sky locations with only moderate light pollution, many objects will appear significantly enhanced over unfiltered and wideband filtered views.

  Orion UltraBlock Narrowband Filter SC Thread [EN]


- The Orion Ultrablock Astronomy Filter works best for heavily light-polluted skies and for high contrast views of faint nebulae.

- The filter is mounted in a SC threaded, anodized aluminum cell

- The Orion Ultrablock Astronomy Filter blocks all forms of light pollution, including pollution from incandescent and fluorescent lighting.

- Provides high transmissions of hydrogen-beta and ionized oxygen wavelengths.


Transmission curve:

  Orion UltraBlock Narrowband Filter SC Thread [EN]

Orion UltraBlock Telescope Filters block all forms of light pollution, including both narrowband mercury- and sodium-vapor lighting and broadband light pollution sources. UltraBlock Filters reject pollution from incandescent and fluorescent lighting, which wideband filters can't stop. Extremely high (99.9%) blocking of critical mercury and sodium emission bands and very high transmission of hydrogen-beta and ionized oxygen wavelengths result in the highest contrast gain of any competing light pollution filter.

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