Will a refractor telescope work without the angled mirror?

Just for curiosity sake, if you were to just insert the eyepiece where the angled mirror would normally go, making it just one long tube rather than angled, would it still work and provide a clear image? Or must the angled mirror with the eyepiece  be used in order to see anything through the telescope? 


Gave it a try and cannot get a clear image. So depending upon what you're looking at,  it won't extend far enough to give you a clear image without the angled mirror in there. So apparently, that extra length does make a difference.

4 Answers

  • 4 weeks ago

    Yes, you can get a good image without the mirror, but you will likely need some sort of extension tube in order to get the focusing right. 

  • 4 weeks ago

    Yep,,but you get stiff neck looking above the horizon.

    The focusing will be different as the mirror adds to the focal distance.

  • Tom
    Lv 7
    4 weeks ago

    The REFLECTOR telescope uses the angled Mirror.  A REFRACTOR uses LENSES that bend or  "REFRACT" (Big hint here) the light going straight through it. Those with offset lenses, use a PRISIM to redirect light---as in Binoculars or a Monocular. 

    The only refractors with an angle mirror would be those long ones that bend the light AT the eyepiece so you don't have to look at it through the end---a mere "Convenience" not really needed--as the device has already done its thing at that point.

  • 1 month ago

    It would still give a clear image. But it would be very uncomfortable to work with.

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