General Optics

Discussion of optical systems and their characteristics.
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  • Advances in telescope optics
    by The Happy Parrot »
    5 Replies
    129 Views
    Last post by Michael131313
  • 127mm Lens
    by LDW47 »
    7 Replies
    188 Views
    Last post by LDW47
  • Collimation tools for faster scopes?
    by turboscrew »
    22 Replies
    1677 Views
    Last post by Don Pensack
  • How to Calculate the Limits of Your Telescope
    by mikemarotta »
    8 Replies
    620 Views
    Last post by Don Pensack
  • 10 Inch Dob Under Bortle 4 Skies Vs. 6 Inch Refractor Under Bortle 2 Skies
    by Refractordude »
    8 Replies
    351 Views
    Last post by pakarinen
  • Issue with my Coronado PST: shift towards green
    by c12marin »
    4 Replies
    254 Views
    Last post by Solsearcher
  • Aperture size and "seeing" conditions
    by Piet Le Roux »
    37 Replies
    3087 Views
    Last post by OzEclipse
  • laser ray tracing the zenith prisms
    by j.gardavsky »
    6 Replies
    285 Views
    Last post by j.gardavsky
  • Finally it looks as if my Antares Versascope will guide.
    by Greenman »
    1 Replies
    159 Views
    Last post by Greenman
  • Difraction Rings
    by Jones »
    1 Replies
    214 Views
    Last post by Bigzmey
  • Geometrical optics and focuser
    by turboscrew »
    6 Replies
    746 Views
    Last post by ARock
  • night vision
    by yobbo89 »
    5 Replies
    882 Views
    Last post by yobbo89
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