› Forums › General Discussion › Aberrations in astronomy › Aberrations
28 March 2021 at 1:18 pm
#584015
Andy Wilson
Keymaster
Another couple of thoughts. Fundamentally, even with a “perfect” telescope a star is a disc due to diffraction in the optics, and you rarely see performance at the diffraction limit as atmospheric turbulence blurs this disc.
Cheers,
Andy