SBIG ST7 E
5x10m, selfguided
Pollux 0.8m azimutal mounted telescope
3557mm (=140 inch) f/4.44
3-lens Wynne corrector
1.85 arc seconds
Deconvolution, DDP and unsharp mask
good transparency, shortly after this exposure the seeing went bad.
Philipp Keller and Christian Fuchs

This is up to now our longest exposure with the AltAz mount. Everything went fine, no problems. This is a really nice object but the center is very bright compared to the arms so you will have to apply some logarithmic scaling or DDP.