Nobody said large aperture does no good, Brent, I just pointed-out that daytime seeing conditions often limit the potential of larger apertures. I also carefully mentioned that I like the option of full-aperture when conditions allow. I made a full-aperture filter for my 6" Newt. Professional solar scopes are located at higher altitudes, surrounded by water, or other geographic features that maximize observing time. We usually set up in parking lots, or next to huge heat-sinks such as pavement or buildings. I visited Kitt Peak once and got a tour of the solar scope there, a behemoth. We arrived mid-day and the scope was not operating. I was told that the seeing was best in the mornings, on average. The best night seeing comes after the ground has cooled and convection currents have abated. The best day seeing usually comes before the ground has heated up. Large apertures on the sun are best used early in the day. On Tue, Mar 6, 2012 at 2:53 PM, Brent Watson <brentjwatson@yahoo.com> wrote:
Just out of curiosity, if aperture during the daytime does no good, then why are the professional solar scopes large aperture? Not as large as the night time scopes, but still bigger than anything I have owned.