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  1. Úvod
  2. Příslušenství
  3. Explore Scientific O-III Nebula2" Filter

Explore Scientific O-III Nebula2" Filter

Filtr Explore Scientific O-III Nebula 2" Příslušenství pro dalekohledy. Navrženo pro studium mlhovin One of the most important obstacles for the explo... celý popis
Dostupnost
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Běžná cena
2 490 Kč
2 490 Kč
2 058 Kč
bez DPH
Číslo produktu:74785
EAN kód:0753215772568
Hlídat cenu / dostupnost
Kompletní specifikace

Filtr Explore Scientific O-III Nebula 2"


Příslušenství pro dalekohledy. Navrženo pro studium mlhovin


One of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects bejond the solar systems enourmously. Depending on the type of the celestial object it is possible to increase the contrast dramatically by blocking the annoying artifical light. The Explore Scientific O-III filter uses a characteristic property of the so called emmission nebulae. Those objekcts glow in special colors, the so called emmission lines. Those emmission lines are linked to chemical elements - in this case oxygen. The Explore Scientific O-III nebula filter blocks all other colors (and thereby nearly all of the artificial light) and only the two emmission lines of the oxygen can pass the filter. The result is astonoishing: suddenly nebulae are visible at locations that were completely empty without filters. In suburbian skies for example the veil nebula NGC 6992 is almost not visible with a 200mm telescope. By using this filter you can see the nebula and its structures without problems. A must for every visual observer.


Features:



  • High-quality Explore Scientific O-III filter

  • Only lets pass the emission lines of oxygen

  • Absorbs all other emission lines and almost all artificial light


Specifications:



  • Type: O-III

  • Optics material: optical glass

  • Optics coating: multicoated

  • Eyepiece barrel diameter: 2”(50.8mm)

  • Application: nebula observation

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