Quote:
Originally Posted by Atmos
You've just named every single reason why I went with a refractor over a newt or a MN190  Not a fan of diffraction spikes and I don't like the focuser position. |
While theres nothing to be done about focusser position other than some classy after-market ball bearing rotating mount rings for ergonomics , there are certainly no diffraction spikes other than any mirror clips in a Mak-Newt and the central obstruction is relatively modest on an F5.3 .
With good native off axis spot performance they should be optically superior to any 8" apo provided you are not going for a really large diameter focal plane - not that there are many 8" APOs in the world as the cost of the glass is prohibitive for even the keenest retractor buffs !