TPO #21 Orange Filter & Case - 2"

  • Sale
  • Regular price $18.95
  • TPO #21 Orange Filter & Case - 2"

    • Sale
    • Regular price $18.95
    • ITEM #



    TPO #21 Orange Filter & Case - 2"

    Eyepiece filters are an invaluable aid in lunar and planetary observing. They reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue.

    TPO filters are made of high quality, solid plane parallel glass with excellent homogeneity. They are anti-reflection coated to prevent glaring and ghosting. All eyepiece filters are threaded to fit most 2" eyepieces and comes with a hinged, plastic case to keep your filter safe and clean when not in use.

    #21 Orange (46% transmission) reduces or blocks transmission of blue-green wavelengths. Use on Jupiter and Saturn to enhance detail in the belts and polar regions. Sharpens boundaries between yellow-orange areas and blue-green regions on Mars resulting in a darkening of edge-detail in the maria.


    TPO Product Number: OS-F2-21

    #21 Orange Filter:

    • Can Reduce or Block Blue-Green Wavelengths
    • Sharpens Boundaries of Yellow-Orange to Blue-Green areas
    • Case Included
    • Fits most 2" Eyepieces

    Additional Information

    Filter TypeOrange
    Free ShippingYes
    Warranty2 Year Warranty
    Wratten #21

    Questions & Answers

    Have a Question?

    Be the first to ask a question about this.

    Ask a Question

    Make easy monthly payments over 3, 6, or 12 months

    Rates from 10–30% APR.

    Quick and easy

    Enter a few pieces of information for a real-time decision. Checking your eligibility won't affect your credit score.

    No hidden fees

    Know up front exactly what you'll owe, with no hidden costs and no surprises.

    Just select Affirm at checkout.