Used TPO 2" Deluxe Dielectric Mirror Diagonal

  • Sale
  • $89.00
  • Regular price $119.00
  • Used TPO 2" Deluxe Dielectric Mirror Diagonal

    • Sale
    • $89.00
    • Regular price $119.00
    • ITEM #



    • This is a used item in excellent condition*
    • 99% Reflectivity Dieletric Coatings
    • Maximizes Light Output
    • Comes with 2 inch to 1.25 inch Adapter

    Used TPO 2" Deluxe Dielectric Mirror Diagonal

    The Third Planet Optics 2 inch dielectric mirror diagonal features 99% reflectivity, dielectric coatings to maximize light output of your telescope system. Our custom made diagonal uses a BK7 mirror polished to 10th wave accuracy or better for best possible image quality.

    The TPO 2 inch dielectric diagonal also features a CNC machined housing. This housing is designed to retain the optimal collimation of the mirror and assure the best optical performance. The CNC machined aluminum housing will provide outstanding results for years of use.

    This diagonal also includes brass compression rings on both diagonal and the included 2 inch to 1.25 inch adapter, assuring gentle treatment of your eyepieces. Some other brands use set screw locking mechanisms that can mar the barrel surface of your favorite eyepieces. Avoid scratches and gouges by using the OPT dielectric series diagonals. The OPT dielectric diagonal is threaded to accept 2 inch filters.

    Third Planet Optics dielectric diagonals provide outstanding performance with low prices to provide amateur astronomers with excellent value! OPT backs this diagonal with a full 2 year warranty against manufacturer defects.

    Additional Information

    Accessory TypeDiagonals
    Barrel Size2"
    Included AdaptersOne 1.25"
    Optical Coatings99% Dielectric
    Warranty90 Day
    • 2" dielectric diagonal
    • 2" to 1.25" adapter
    • Caps and original box
    • * There are a few set screw marks on 2" barrel *

    Customer Reviews

    Based on 1 review Write a review

    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.