Optics

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  • The 1X / 2X / 3X Magnification Protocol for eyepiece set selection
    by Don Pensack »
    23 Replies
    2061 Views
    Last post by Bigzmey
  • Evolution of Eyepieces by Chris Lord
    by notFritzArgelander »
    19 Replies
    15513 Views
    Last post by j.gardavsky
  • Optics Websites
    by mikemarotta »
    18 Replies
    2894 Views
    Last post by Don Pensack
  • A Guide to choosing eyepieces
    by OleCuss »
    13 Replies
    14325 Views
    Last post by OleCuss
  • Creating a basic set of eyepieces for your new telescope
    by Lady Fraktor »
    65 Replies
    30479 Views
    Last post by tomthetank
  • Canon 10X30 IS II
    by John Baars »
    6 Replies
    177 Views
    Last post by The Happy Parrot
  • Show us your planetary eyepieces!
    by WilliamPaolini »
    17 Replies
    316 Views
    Last post by WilliamPaolini
  • ASTRO BERLIN ORTH, Another missing link in the Evolution Tree of Eyepieces
    by j.gardavsky »
    9 Replies
    233 Views
    Last post by j.gardavsky
  • 15x70s -> 20x80s?
    by pakarinen »
    6 Replies
    77 Views
    Last post by pakarinen
  • Some lenses to play with on the cloudy days
    by j.gardavsky »
    3 Replies
    59 Views
    Last post by notFritzArgelander
  • Change your eye pupil size voluntarily?
    by AntennaGuy »
    15 Replies
    599 Views
    Last post by AntennaGuy
  • What is your favourite AFOV?
    by Lady Fraktor »
    43 Replies
    2398 Views
    Last post by Ylem
  • Burgess Optical
    by Lady Fraktor »
    16 Replies
    1012 Views
    Last post by WilliamPaolini
  • Monolithic SCT from single cylider of glass
    by Chich »
    0 Replies
    134 Views
    Last post by Chich
  • Coma correctors
    by turboscrew »
    6 Replies
    205 Views
    Last post by turboscrew
  • Finder for 20x80s
    by KathyNS »
    6 Replies
    311 Views
    Last post by John Baars
  • How many eyepieces should we have?
    by Seeker »
    84 Replies
    4471 Views
    Last post by Lady Fraktor
  • Buying bino
    by Capt. Midnight »
    13 Replies
    721 Views
    Last post by pakarinen
  • Collimation change by off-center secondary's weight
    by SkyHiker »
    3 Replies
    165 Views
    Last post by Don Pensack
  • I want to buy myself premium binoculars.
    by messier 111 »
    35 Replies
    4308 Views
    Last post by messier 111
  • Wide angle eyepieces useful?
    by turboscrew »
    6 Replies
    322 Views
    Last post by AntennaGuy
  • Hensoldt, like Dollond eyepiece rising from the ashes of the 18th century
    by j.gardavsky »
    2 Replies
    258 Views
    Last post by j.gardavsky
  • Celestron 15x70s
    by Graeme1858 »
    22 Replies
    749 Views
    Last post by KingNothing13
  • Question about a Celestron Ploessel that is part silver and part black
    by MistrBadgr »
    8 Replies
    270 Views
    Last post by Lady Fraktor
  • Small focal length, small exit pupil, large AFOV
    by 25585 »
    24 Replies
    628 Views
    Last post by notFritzArgelander

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