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Description


Product description

The UltraBlock is the filter for deep-sky observers located at highly light-polluted sites. Blocks all forms of light pollution - mercury vapor sodium emission bands - while passing the critical hydrogen-beta ionized oxygen wavelengths. an UltraBlock, emission planetary nebulas surface from the washed out background sky. In dark skies, the UltraBlock also enhances the sky presence of a significant number of fainter deep-sky objects over unfiltered wideband-filtered views.

From the Manufacturer

The UltraBlock is the ideal eyepiece filter for deep-sky observers located at highly light-polluted sites. Narrowband filter blocks all forms of light pollution. Enhances the presence of a significant number of fainter deep-sky objects. Compatible threaded 2" eyepieces. Metal filter cell construction. Save yourself a trip to dark skies - the UltraBlock filter you can enjoy the stars from the suburbs

Feature


  • The UltraBlock is the ideal eyepiece filter for deep-sky observers located at highly light-polluted sites
  • Narrowband filter blocks all forms of light pollution
  • Enhances the presence of a significant number of fainter deep-sky objects
  • Compatible threaded 2" eyepieces. Metal filter cell construction.
  • Save yourself a trip to dark skies - the UltraBlock filter you can enjoy the stars from the suburbs


Manufacturer: / /Dimension: 1 x 3.2 x 3.2 inchs., Weight: 0.05lbs.

Filed under: Eyepieces & Accessories