Oh ya Roger for have'n a go mate, it's fun trying different things
Even though Eta was well on its way down in the southwestern sky when I did that shot last year the seeing was still quite reasonable but I have been wanting to try again this year if the seeing cooperates and go for it when it is crossing the meridian, I'm sure I could pull a bit more out then? There are other techniques that would improve the resolution too, like lots of really short subs and then only using the best ones ala planetary imaging and just what Steve Kinetic has been doing lately with his 12".
Mike