Telescope Reviews: First pic with C11 & ZS80FD

Hi all

I could use a little help out here.
I finally got my WO ZS80FD piggybacked ontop of my C11 and tried to see how it would go AP speaking... So this is my first set of images taken with this rig. Mount is a G-11 gemini.

It was almost a full moon (2 days ago) and I aimed at M57, just to get the feel of the all package behaviour. I didn't really tried to pinpoint focus so bare that in mind.
I guided with PHD, which I have been doing for some time and with very good results (with my CG-5 GT).

This time I got a few 120 sec subs, shooting with my 350D+0.63x FR+Skyglow filter.
The first series was ok:
(cropped images)

http://img172.imageshack.us/img172/4998/m57redondasid7.jpg
Then, after a few shots I started to get this:

http://img296.imageshack.us/img296/1841/m57gota50sp5.jpg
Well, even though, I stacked the all subs (5x 120 sec + 19x 150sec) with 10 darks:

http://img49.imageshack.us/img49/5304/m57badpixreduzidard6.jpg
I know it's not sharp and most of the subs are "trailed" so...

But anyway, can some tell what might have gone wrong???
Urban skies
guided with DMK21AF

Thanks!

Ciao
xumie

--------------------
Ciao
xumie
________________________________
C11
WO ZS80FD
G-11 Gemini
ST2000XM + CFW10
DMK21AF04.AS
350D unmod

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