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Telescope Nebula Filters

Nebular filters, also called Light Pollution Reduction (LP or LPR) filters, are used to view faint, deep-sky objects in your telescope if you cannot access a dark-sky location outside of a city. They are a nice-to-have telescope accessory. If you can only pick one filter, get a narrowband filter. Be sure and get one that is labelled UHC or Ultra-High Contrast.

LP filters work by blocking all wavelengths of light except those transmitted by the ionized atoms of hydrogen, oxygen and sulfur found within nebulae and supernovae remnants.

      1. Filter Type
      2. Bandpass
      3. When Used

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