Skip to content

Features

  • The 2" OIII narrowband filter isolates the two doubly-ionized oxygen lines (496 and 501 nm lines)
  • Filter has ultra-hard, vacuum-deposited coating
  • Eliminates un-natural colored halos surrounding bright stars

Celestron Oxygen III Narrowband Filter - 2 in

The 2" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501 nm 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 sky background and the faint photons of OIII light needed for detailed views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae, among other objects.

Each filter has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm This eliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology.



You may also like

  • $430.00 USD - $430.00 USD
    $430.00 USD
    $430.00 USD - $430.00 USD
    $430.00 USD

    Antlia 2.8nm Narrowband OIII Ultra Filter

    ANT-OIII-2.8NM-RD36
    1 in stock

    Antlia OIII Ultra narrowband filter optimizes the FWHM (full width half maximum) to 2.8nm bandpass. As the bandwidth becomes narrower, the 2.8nm U...

    View full details
    $430.00 USD - $430.00 USD
    $430.00 USD
    $430.00 USD - $430.00 USD
    $430.00 USD
  • $625.00 USD - $625.00 USD
    $625.00 USD
    $625.00 USD - $625.00 USD
    $625.00 USD

    Askar 6nm Color Magic Ha/OIII & SII/OIII (D1+D2) Filter Package

    ASK-CM-D1D2

    Dual filter package: 6nm Ha/OIII (D1) and 6nm SII/OIII (D2) Optimized for high-contrast, narrowband astrophotography Description ...

    View full details
    $625.00 USD - $625.00 USD
    $625.00 USD
    $625.00 USD - $625.00 USD
    $625.00 USD
  • $225.00 USD - $225.00 USD
    $225.00 USD
    $225.00 USD - $225.00 USD
    $225.00 USD

    Askar Color Magic Ha/OIII & SII/OIII (C1+C2) Filter Package

    ASK-CM-C1C2
    2 in stock

    Dual-filter package for astrophotography: Ha/OIII (C1) and SII/OIII (C2) Optimized for capturing stunning nebula images with enhanced color ...

    View full details
    $225.00 USD - $225.00 USD
    $225.00 USD
    $225.00 USD - $225.00 USD
    $225.00 USD
  • $380.00 USD - $380.00 USD
    $380.00 USD
    $380.00 USD - $380.00 USD
    $380.00 USD

    Antlia ALP-T Dualband 5nm Ha/OIII Filter

    ANT-ALP-T-2
    2 in stock

    The Antlia ALP-T dual band 5nm Ha&OIII filter is a dual line-pass filter which was designed to be used primarily with one-shot color (OSC) cam...

    View full details
    $380.00 USD - $380.00 USD
    $380.00 USD
    $380.00 USD - $380.00 USD
    $380.00 USD
  • $129.00 USD - $249.00 USD
    $129.00 USD - $249.00 USD
    $129.00 USD - $249.00 USD
    $129.00 USD

    ZWO Narrowband OIII Filter - 7nm

    Options available
    1 variants in stock

    7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

    View full details
    $129.00 USD - $249.00 USD
    $129.00 USD - $249.00 USD
    $129.00 USD - $249.00 USD
    $129.00 USD