80F5 Achromat Vs 72F6 Ed Apo

80F5 Achromat vs 72F6 ED Apo

80F5 Achromat vs 72F6 ED Apo (2)

ED vs APO Refractor Telescopes!? FPL-51 vs FPL-53 vs FCD-100!?

Wido's AstroForum

APO vs Achro??? What is the difference between an Achromatic and Apochromatic refractor telescope?

ED APO vs. Achromat

Guide to Refractor Optics - Choosing the Best Telescope for You!

Review of the TeleVue 85 - A Popular Premium apo Among Refractor Lovers!

4 Telescopes Tested: Doublet vs. Triplet vs. Quadruplet vs Quintuplet

Whats the Difference between an Achromat and and Apochromat Refractor Telescope

Worlds Best Doublet vs Best Triplet APO Refractor Telescope. Is the Triplet worth the extra cost???

5" Refractor Shootout

3" vs 4" vs 5" vs 6" vs 7" Refractor Telescope for Visual and Astrophotography. What's better???

Baader UV/IR Cut vs Semi Apo filter - Lunar Test with Achromat Refractor

$300 for a Telescope: Refractor or Reflector?

4" APO Refractor Shootout

Best Eyepieces For A Short Tube 80mm f/5 Achromatic Refractor Telescope

Dr AstroGeoTech

Brief review of the Vixen ED80 apochromatic refractor! (Similar to the Orion ED80 refractor)

Cheapest APO refractor telescope. Is it any good?

Turn your Achromat into an Apochromat!

Stars and Guitars

Refractor vs Reflector telescope explained for beginners