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Have questions? Call Customer Service at 866-252-3811 (M-F 8am-5pm CT)!

Star Diagonals

Astronomical observation usually requires the telescope to tilt up significantly, which can make straight-thru viewing awkward and uncomfortable. A diagonal solves this comfort problem by using a mirror to direct the light at a 90° angle toward the eyepiece. Explore Scientific has both 2-inch and 3-inch diagonals with dielectric-coated mirrors that are 99% reflective.

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  • Explore Scientific 99% Reflective 2" Diagonal
    Explore Scientific 99% Reflective 2" Diagonal
    Original price $ 199.99 - Original price $ 199.99
    Original price
    $ 199.99
    $ 199.99 - $ 199.99
    Current price $ 199.99

    Explore Scientific 99% Reflective 2" Diagonal

    Explore Scientific

    Description The Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with 1.25-inch Adapter and dust covers. Solid construct...

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    Original price $ 199.99 - Original price $ 199.99
    Original price
    $ 199.99
    $ 199.99 - $ 199.99
    Current price $ 199.99
  • Explore Scientific 99% Reflective 3" Diagonal
    Explore Scientific 99% Reflective 3" Diagonal
    Original price $ 589.99 - Original price $ 589.99
    Original price
    $ 589.99
    $ 589.99 - $ 589.99
    Current price $ 589.99

    Explore Scientific 99% Reflective 3" Diagonal

    Explore Scientific

    Description The Explore Scientific 3-inch Dielectric-Coated Diagonal Mirror comes complete with 2 inch Adapter and dust covers. Solid construction...

    View full details
    Original price $ 589.99 - Original price $ 589.99
    Original price
    $ 589.99
    $ 589.99 - $ 589.99
    Current price $ 589.99