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Thanks. I'm still unsure about how high a magnification is useful. I'm quite happy with my view of the whole disc with the 9mm Nagler, but I'm wondering how much mag I can use to pick out details. Do people find the view of individual prominences, sunspots, filaments etc improved by going higher than 67x and if so how high? Is the seeing more problematic than by night due to the extra heat in the atmosphere and on the filter? If, so, just how far can the power be usefully pushed. If the answer is that there is not much to be gained by going to higher magnification, that will be fine - I can rest content with my 9mm. It's just that constant question - could this be even better?
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