XPost: sci.physics   
   From: nospam@de-ster.demon.nl   
      
   Thomas 'PointedEars' Lahn  wrote:   
      
   > J. J. Lodder wrote:   
   > > Paul.B.Andersen  wrote:   
   > >> Den 17.07.2025 02:18, skrev Bertitaylor:   
   > >>> Hubble and Webb can find so called black holes and planets light years   
   > >>> away but cannot show a footprint on the Moon!   
   > >>   
   > >> Hubble photos of Moon.   
   > >> []   
   > >>   
   > >> The best Hubble can do:   
   > >> [ >> moon/>]   
   > >>   
   > >> "Hubble can resolve features as small as 280 feet across."   
   > >   
   > > Just what you expect, given that Hubble is diffraction-limited,   
   >   
   > [sic!]   
   >   
   > (AFAIK) *every* optical system (i.e., one based on light) has this   
   > limitation.  That is merely a consequence of light being an electromagnetic   
   > wave.  The best theoretical resolution is   
      
   So you misunderstood that too.   
      
   "given that Hubble is diffraction-limited"   
   is a statement about the quality of Hubble's optics.   
      
   Many optical systems cannot reach the diffraction limit,   
      
   Jan   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)