Posted by Nick Atkinson at 18:00 on 2010 Oct 30
There are several variables to consider a larger telescope will look through a wider column of air. With good seeing a 12" scope will always be able to see finer detail Using my 150 triplet I have failed to see the red spot despite using different coloured filters. I always remember looking through the army telescope at Aldershot I believe a 10" F15 achromat and the colour of the red spot was quite brilliant but then I was 18 not over 60 as now. So perhaps another thing