hi guys, I have edited my original reply by adding a jpg image which hopefully fully illustrates what I said as text in my original post. If you still have any probs, send me an email.
Doug
http://www.iceinspace.com.au/forum/....es/happy19.gif
home-made 381 mm Dob, Stellar Cat, xy secondary mount.
C9.25 Schmidt Cass
various Ethos & Nagler eyepieces
member SASi