Quote:
Originally Posted by strongmanmike
Hope so H, at least the seeing wont be such a limiting factor and can't wait to see the whopping great field come down for the first time  
Mike |
You'd be surprised. It's been my experience that these refractors are so sharp they are quite difficult to keep in focus for an extended period of time. When you nail the focus you can clearly see variations in seeing over time. Even at 500mm FL. Can't use a reducer on my old Q so I don't know if that still would be an issue at ~300mm. I found mine to be impossible to focus manually with the standard focuser. I had to get a micro-focuser. I'd always overshoot somehow. Then I had to get some kind of temperature compensation and profile the scope over many nights to get a good ratio absolute position vs. temp. Works well but it's not perfect. Beginning of the night when temp drops rapidly it doesn't seem to be linear. Once you're past that around 22:00 when everything settles then it's ok.