That's an excellent image Kieran! I have to say that, aesthetically speaking, I prefer M3 to M13 - can't say quite why except that it looks a bit more like I think a Globular should look!
It reminds me of one of the most awesome things I have ever seen which was when I visited an observatory in South Australia in 2002 and a guy there showed me 47 Tucanae through a 15" Dob - a really amazing sight!
Clear skies,
Paul.
  