Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when imaging nebulae.

Chroma Technology OIII filters are available in the following filter sizes:

  • 1.25″ Mounted
  • 2″ Mounted
  • 31mm Unmounted
  • 36mm Unmounted
  • 50mm Unmounted
  • 50x50mm Square Unmounted

Optical Density Data:

27007 - OIII 5nm Optical Density

All transmission and blocking (OD) data are actual, measured spectra of representative production lots. Spectra varies slightly from lot to lot. Optical density values in excess of 6 may appear noisy because such evaluations push the resolution limit of low light level measurements.

Chroma Technology OIII 5nm Bandpass Filters

SKU: CT-27007

$759.00$2,249.00

    Need Expert Advice?

    Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

    Enquire now or call us (03) 9042 2293

    Chroma Technology OIII 5nm Bandpass Filters

    SKU: CT-27007

    $759.00$2,249.00

    Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when imaging nebulae.

    Chroma Technology OIII filters are available in the following filter sizes:

    • 1.25″ Mounted
    • 2″ Mounted
    • 31mm Unmounted
    • 36mm Unmounted
    • 50mm Unmounted
    • 50x50mm Square Unmounted

    Optical Density Data:

    27007 - OIII 5nm Optical Density

    All transmission and blocking (OD) data are actual, measured spectra of representative production lots. Spectra varies slightly from lot to lot. Optical density values in excess of 6 may appear noisy because such evaluations push the resolution limit of low light level measurements.

      Need Expert Advice?

      Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

      Enquire now or call us (03) 9042 2293