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Filtro optolong OIII 25nm 1.25" [OPTOLONG]

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Technical Data



  • Schott substrate material

  • Thickness 2.0mm

  • Surface Quality: 60/40 (Refer to MIL-O-13830)

  • Fine-optically polished to ensure accurate 1/4 wavefront and <30 seconds parallelism over the both surfaces

  • 90% transmission at major OIII line 495.9nm and 500.7nm

  • Precision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm)


Coating Parameter



  • Non-cementing optical substrate coating

  • Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change

  • Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band

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75,50  

3-4 días

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