TPO #23A Light Red Filter & Case - 1.25"

  • Sale
  • Regular price $8.95
  • TPO #23A Light Red Filter & Case - 1.25"

    • Sale
    • Regular price $8.95
    • ITEM #



    #23A Light Red Filter:

    • On 6" and Larger Aperture has Stronger Color Contrasts
    • Increases Contrast between Mercury and the Blue Sky!
    • Fits most 1.25" Eyepieces


    TPO #23A Light Red Filter & Case - 1.25"

    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 1.25" eyepieces and offer a full 26mm clear aperture. Comes with a hinged, plastic case to keep your filter safe and clean when not in use.

    #23A Light Red (25% transmission): On telescopes of 6" aperture and larger the #23A does approximately the same functions as the #21 filter, but with stronger contrast and enhancement of marginally defined blue-green surface detail. Useful primarily on Jupiter, Saturn, and Mars. Increases contrast between Mercury and bright blue sky during daylight observations or during twilight.


    TPO Product Number: OS-F23A


    Additional Information

    Filter TypeRed
    Free ShippingYes
    Warranty2 Year Warranty
    Wratten #23A

    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.