Like all such comparisons the Hubble data is not full res but it is
still great fun to compare :-P

The image on the right was taken with a 6" F7.5 Apochromatic refractor with a 1300mm FL.
It is an extreme enlargment of a small section of the original full frame image. The image
on the left was taken from space with the Worlds greatest scientific instrument
- The Hubble Space Telescope!

An even closer comparison is here:
http://www.pbase.com/strongmanmike2002/image/107605167/original

Full frame version of the 6" scope image can be seen here:
http://www.pbase.com/strongmanmike2002/image/94204109/original