Lumicon Oxygen III (OIII) Filter - SCT Rear Cell - (Preowned)

The renowned, original Lumicon OIII Filter narrow bandpass filter (11nm) isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black background of space and the delicate photons of OIII light needed for near-photographic views of the Veil, Ring, Dumbbell and Orion nebulae, among other objects.

See for yourself -- it''s truly amazing what the Lumicon OIII Filter allows you to see! Lumicon tests every filter individually on a Perkin-Elmer Double-Beam spectrophotometer, inscribing on the filter its percentage of transmission for each of the primary lines. Do not settle for cheap, foreign-made imitations.

• Narrow band pass filter (11nm) isolates just the two doubly ionized oxygen lines (496nm and 501nm) emitted by planetary and extremely faint nebulae.

   

   

• Produces near-photographic views of the Veil, Ring, Dumbbell, Orion, plus many other nebula.

   

   

• Consists of two elements, sandwiched coatings, and anti-reflection coatings on all surfaces to

  prevent ghosting.

   

   

• Lumicon tests every filter individually on a Perkin-Elmer Double-Beam spectrophotometer, inscribing on the filter its percentage of transmission for each of the primary lines.

Filter Type: OIII

Filter Size: SCT rear cell

Presentation: Round, threaded cell

Bandpass: 10-12nm

Optimum Exit Pupil (Light Polluted Skies): 2-5mm

Optimum Exit Pupil (Dark Skies): 3-7mm