"Derek Overdahl" wrote in message ...
Its a term I have seen over and over again with little explanation
?
So? What exactly is the difference any way?...

How can I translate this into something that means something to me...

Any input would be appreciated thanks?

This discusses the "diffraction limited field" in the context of
newtonian reflectors and double star work. Might give you useful
pointers to more relevant information...

http://www.brayebrookobservatory.org...or_article.pdf

Cheers
Beats