[[1ponders] (Paul)]

I know Mike, you and I had a great conversation with them a while back when we were talking about how you managed to find the time to do everything you do. It's just that every now and then I like to burst out and add a bit of colour. Besides I prefer "emoticon" rather than "smilies" That says it all.

Thanks for that John. I've read about the drift method, but never bothered to check the eyepiece's claimed field. I'm a very trusting soul. If we ever get some more clear nights and my camera stops nagging me I'll do what you've suggested and compare reality with my calculated FOV