[QUOTE=Tropo-Bob;1235043]I like the idea of longer focal lengths myself...but, they not always either available or practical.
Some years back I stopped down a 6" F8 reflector to 30mm (off axis, off course), which effectually made it F40. I split Epsilon Bootes so was very impressed. The other notable feature was that the depth of focus at this F Ratio was incredible; it seemed to be in sharp focus when I racked the EP in & out for over 5mm.
I often thought this was worth investigating further, but so far, have not....[/lengt
+1 for depth of focus from long focal length
bigjoe