So far I’ve primarily used my quark with a 60mm F6, and have been happy with the results. Today I briefly tried the quark with my tsa120 at f7.5, but wasn’t that impressed with the difference. Image scale was larger, and I could see maybe a bit more in the sunspot area, but the prominences were at best about the same, maybe even a bit worse, certainly less “pop.” Maybe no wow factor was due to seeing? Edge of the sun seemed fairly stable, but I haven’t really observed solar enough yet to recognize really good seeing vs bad. It certainly didn’t feel worth the extra setup time.
So far I’ve not been that interested in surface detail, as it doesn’t seem to change much, maybe I just need to wait for a more active sun. But it got me wondering if I’d be better off with a fast large aperture, like maybe an Orion 120mm f5? Something bigger maybe? It goes against my night observing instincts for something that cheap, but I know we don’t need apo for h-alpha. Would an f5 to f6 actually outperform slower scopes in this case? Any suggestions on the ideal scope to maximize prominence detail and image scale for getting up close to them? Ideally with a focuser that could handle quark + binoviewers?
Edited by betacygni, 27 February 2021 - 08:41 PM.