Thanks for all your replies. I will definitely give the Sky's the the limit site a view, thanks for the link Damnut, that seems a great solution, won't even need to leave the house! I'll drop First Light Optics an Email as well, and see what they can do. I'm between Tiverton and Crediton and my scope is the Skywatcher 200p Dob. I've been looking at the Baader eyepieces on FLO at £92 because of the wide FOV. That is probably close to the top of my budget but I would like to explore all price levels to compare and buy what is best suited to me. Thanks Adrian