Refractor type Telescopes

Discuss your refractor type scopes here.
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  • Achromat Vs Semi-APO Vs APO - What's The Difference?
    by JayTee »
    59 Replies
    22611 Views
    Last post by Bigzmey
  • Your refractor - let's see it
    by Nakedgun »
    62 Replies
    6003 Views
    Last post by John Donne
  • Recommendations for a suitable scope for the Fornax LT2 Tracker
    by Deserter »
    5 Replies
    119 Views
    Last post by Deserter
  • TS achro 6" F5.9 - any owners
    by 25585 »
    1 Replies
    57 Views
    Last post by Bigzmey
  • How exact does the eyepiece-focuser-diagonal alignment to the objective need to be?
    by realflow100 »
    7 Replies
    477 Views
    Last post by turboscrew
  • Reflected and scattered light in the zenith diagonal mirror
    by j.gardavsky »
    3 Replies
    218 Views
    Last post by j.gardavsky
  • Scattering of light in the refractor optical tube assemblies
    by j.gardavsky »
    9 Replies
    513 Views
    Last post by j.gardavsky
  • A 30$ svbony SV501 telescope. slight modification.
    by realflow100 »
    0 Replies
    169 Views
    Last post by realflow100
  • Is this a good one?
    by Capt. Midnight »
    5 Replies
    329 Views
    Last post by Ylem
  • cheap 70mm refractor telescope F5.1 testing again
    by realflow100 »
    10 Replies
    450 Views
    Last post by realflow100
  • Whats the typical maximum resolution in arcseconds of a 70mm achromat/doublet refractor?
    by realflow100 »
    7 Replies
    292 Views
    Last post by John Baars
  • My new baby...
    by AstroBee »
    23 Replies
    1232 Views
    Last post by chris_g
  • Picked up this little beauty today.
    by Gmetric »
    25 Replies
    1544 Views
    Last post by Gmetric
  • is it better to correct doublet for center to edge sharpness. or for some other aberration?
    by realflow100 »
    18 Replies
    861 Views
    Last post by realflow100
  • Astro Tech 115 APO ED triplet (engaged impulse drive)
    by mikemarotta »
    16 Replies
    1464 Views
    Last post by Bigzmey
  • APM 140mm ED, my next intended.
    by 25585 »
    29 Replies
    1978 Views
    Last post by 25585
  • Would You Spend $100 On This Telescope?
    by Refractordude »
    12 Replies
    670 Views
    Last post by Richard
  • Created A Quickie For Days When Tired
    by Refractordude »
    7 Replies
    465 Views
    Last post by dagadget
  • Achromatic and apochromatic doublets
    by James »
    33 Replies
    2276 Views
    Last post by dagadget
  • Refractor overload in 2021!
    by Lady Fraktor »
    9 Replies
    1141 Views
    Last post by dagadget
  • AT70ED
    by pakarinen »
    11 Replies
    623 Views
    Last post by pakarinen
  • Binoviewer friendly 4" Apo?
    by Virtus »
    11 Replies
    604 Views
    Last post by WilliamPaolini
  • AT-60ED, how is yours?
    by John Fitzgerald »
    0 Replies
    259 Views
    Last post by John Fitzgerald
  • iOptron ST90?
    by pakarinen »
    4 Replies
    651 Views
    Last post by John Fitzgerald
  • Going lighter
    by Ken_nneth »
    3 Replies
    419 Views
    Last post by mikemarotta
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