View Single Post
  #23  
Old 10-12-2022, 02:29 PM
alpal's Avatar
alpal
Registered User

alpal is offline
 
Join Date: Jan 2012
Location: Melbourne
Posts: 3,629
Quote:
Originally Posted by ChrisV View Post
I always thought Nyquist was just the minimum to be able to reproduce a signal frequency. Doesn't necessarily mean it is very accurate (like way out in amplitude etc). So better off going higher, 3 4 or more5 ????



It's sort of used as an analogy in this case.
https://en.wikipedia.org/wiki/Nyquis...mpling_theorem

You'd have to understand Fourier transforms and
a lot of advanced mathematics to really get your head around it.
In Mike's case yes -
he has 0.84 arcsecond/pixel. - 0.42 would be better.




cheers
Allan

Last edited by alpal; 10-12-2022 at 02:45 PM.
Reply With Quote