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DGM NPB filter 2
DGM NPB filter 2

DGM NPB filter 2" Nebula Filter Astronomy

$ 121.44

Availability: 100 in stock
  • Condition: New
  • Restocking Fee: No
  • Item must be returned within: 30 Days
  • Refund will be given as: Money Back
  • Return shipping will be paid by: Buyer
  • Brand: DGM
  • Type: Nebular
  • All returns accepted: Returns Accepted
  • Size: 2.0 in

    Description

    DGM NPB – NARROW PASS BAND NEBULA FILTER
    An ultra high contrast type of filter that is very effective for small and fainter emission planetary nebula, as well as a variety of bright nebula.
    The NPB filter is characterized by its narrow passband in the OIII and H-Beta emission lines as well as by its inclusion of a secondary H-Alpha passband. The H-Alpha passband allows for the perception of faint red colors in nebulas that have strong emission in the H-alpha line (e.g. M42 and M8), especially when observing with larger telescopes.