Quote:
Originally Posted by Peter Ward
Kudos to Marc for such an excellent write-up and graphic method of showing what's happening at the focal plane. 
(Marc: an extended version would be worthy of a piece in Aust Sky & Tel)
One thing that was not touched on was the quality of the optic. Many instruments are built to a price, rather than specification.
While good value for money optics are out there, I'd pick a smaller high quality instrument over a rubbish light bucket any day...as even the ancient Romans would say: Caveat Emptor ! |
Of course optics and mechanical quality will make a diffrerence. In the illustration I assumed "perfect" optics to compare on the same grounds. Having said that an average 16" RC with a large central obstruction will still out perform a 130mm pristine TOA.
Quote:
Originally Posted by gregbradley
Nice article there Marc - thanks.
It becomes obvious as you progress in astrophotography that larger apertures display more detail and more highly magnified views.
So no one telescope does it all. Some come closer than others though.
Greg.
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With experience in long focal imaging as a result of larger apertures it also becomes blatantly obvious that smaller apertures just cannot reach that level of details in the raw data. Fishy processing is just a perception.