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26 July 2025

diffhist Refracting telescope 11:32 −32 Fountains of Bryn Mawr talk contribs (Undid revision 1302584397 by An astroquanta (talk) Galilean and Keplerian telescopes can be achromatic) Tag: Undo
diffhist Refracting telescope 09:23 +32 An astroquanta talk contribs (Grouped Galilean and Keplerian telescopes into the 'Non-achromatic refractors' category.) Tag: Reverted