Refractor type Telescopes

Discuss your refractor type scopes here.
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  • Star test 70mm F6 achromat doublet. with and without central obstruction. + green filter
    by realflow100 United States of America »
    2 Replies
    3700 Views
    Last post by realflow100 United States of America
  • Field flattener, Williams old one.
    by Altocumulus Scotland »
    1 Replies
    2496 Views
    Last post by Altocumulus Scotland
  • 100th post on CN
    by Bigzmey United States of America »
    36 Replies
    21418 Views
    Last post by KingNothing13 United States of America
  • "A good 70-mm refractor..."
    by mikemarotta »
    16 Replies
    7358 Views
    Last post by mikemarotta
  • Recommendations for a suitable scope for the Fornax LT2 Tracker
    by Deserter Finland »
    5 Replies
    3301 Views
    Last post by Deserter Finland
  • TS achro 6" F5.9 - any owners
    by 25585 »
    1 Replies
    2147 Views
    Last post by Bigzmey United States of America
  • Reflected and scattered light in the zenith diagonal mirror
    by j.gardavsky Germany »
    3 Replies
    2801 Views
    Last post by j.gardavsky Germany
  • Scattering of light in the refractor optical tube assemblies
    by j.gardavsky Germany »
    9 Replies
    4928 Views
    Last post by j.gardavsky Germany
  • A 30$ svbony SV501 telescope. slight modification.
    by realflow100 United States of America »
    0 Replies
    2048 Views
    Last post by realflow100 United States of America
  • Is this a good one?
    by Capt. Midnight »
    5 Replies
    3301 Views
    Last post by Ylem United States of America
  • cheap 70mm refractor telescope F5.1 testing again
    by realflow100 United States of America »
    10 Replies
    5159 Views
    Last post by realflow100 United States of America
  • Whats the typical maximum resolution in arcseconds of a 70mm achromat/doublet refractor?
    by realflow100 United States of America »
    7 Replies
    4388 Views
    Last post by John Baars Netherlands
  • My new baby...
    by AstroBee United States of America »
    23 Replies
    10743 Views
    Last post by chris_g United States of America
  • Picked up this little beauty today.
    by Gmetric Great Britain »
    25 Replies
    11792 Views
    Last post by Gmetric Great Britain
  • is it better to correct doublet for center to edge sharpness. or for some other aberration?
    by realflow100 United States of America »
    18 Replies
    8983 Views
    Last post by realflow100 United States of America
  • Astro Tech 115 APO ED triplet (engaged impulse drive)
    by mikemarotta »
    16 Replies
    9423 Views
    Last post by Bigzmey United States of America
  • APM 140mm ED, my next intended.
    by 25585 »
    29 Replies
    14773 Views
    Last post by 25585
  • Would You Spend $100 On This Telescope?
    by Refractordude »
    12 Replies
    5988 Views
    Last post by Richard South Africa
  • Created A Quickie For Days When Tired
    by Refractordude »
    7 Replies
    3592 Views
    Last post by dagadget United States of America
  • Achromatic and apochromatic doublets
    by James »
    33 Replies
    12779 Views
    Last post by dagadget United States of America
  • Refractor overload in 2021!
    by Lady Fraktor Slovakia »
    9 Replies
    4679 Views
    Last post by dagadget United States of America
  • AT70ED
    by pakarinen United States of America »
    11 Replies
    2469 Views
    Last post by pakarinen United States of America
  • Binoviewer friendly 4" Apo?
    by Virtus »
    11 Replies
    2384 Views
    Last post by WilliamPaolini United States of America
  • AT-60ED, how is yours?
    by John Fitzgerald United States of America »
    0 Replies
    726 Views
    Last post by John Fitzgerald United States of America
  • iOptron ST90?
    by pakarinen United States of America »
    4 Replies
    1484 Views
    Last post by John Fitzgerald United States of America
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