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S-II 6.5nm 2" Filter for Nebulae and Deep Sky - Explore Scientific

S-II 6.5nm 2" Filter for Nebulae and Deep Sky - Explore Scientific

SKU:es-310120

Disponible sous 7 jours

Regular price €229,00 EUR
Regular price Prix promotionnel €229,00 EUR
In vendita Épuisé
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The S-II 6.5nm 2" filter from Explore Scientific is designed to facilitate the observation of deep sky objects, such as planetary nebulae, emission nebulae, and supernova remnants, even under challenging urban observing conditions. This narrowband filter blocks almost all artificial light and only allows the emission line of ionized sulfur at 672 nm to pass through, thereby revealing details invisible to the naked eye without a filter. With a bandwidth of only 6.5 nm, it significantly enhances the contrast and sharpness of faint celestial objects. This filter is ideal for amateur astronomers as well as for astrophotography.

  • Bandwidth: 6.5 nm
  • Filtered emission line: ionized sulfur at 672 nm
  • Material: high-quality optical glass
  • Nearly complete blocking of artificial light
  • Anodized aluminum design for increased durability
  • Back-and-forth threading for use with multiple filters
  • Facilitates observation of nebulae and other deep-sky objects in urban conditions
  • Improves contrast and visibility of details on faint objects
  • Compatible with telescopes with 2" aperture or larger
  • Essential for astrophotographers and visual observers
  • Compatible with 2" diameter eyepieces
  • S-II 2" filter
  • Dust protection case
  • Individual test report to ensure quality
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