My gear: --Celestron 8EdgeHD & 11EdgeHD | 80mm F/6 Triplet | Modified Canon T1i | QSI683WSG-8 | Celestron AVX mount | iOptron CEM60 mount | iOptron ZEQ25 mount --- My skies:
I ache, therefore I am
Quote:Whilst larger scopes do suffer more from bad seeing, the big issue here is temperature equalisation. I do not think that my 11" SCT would ever come to temperature equilibrium without the use of active cooling. A 14" SCT I'd expect to be worse.The difference in central obstruction is too small to have any practical effect.It is also possible that the "worse" scope has rougher optics but really you need to get the temperature effects controlled before you start blaming the optics (if they're reasonably well collimated).
Quote:3) The bigger the scope the more seeing impacts the view?4) Central obstruction too big to expect more?
150mm MCT f/13, 31% CO
"People say I'm in denial. I disagree."