Thanks to a recent gap in the clouds while the moon was up and an unexpected clear night last night, I've now had the opportunity for first light with with AR80S on the AZ5.
The scope's performance on the moon was really impressive. There was a hint of CA on the limb in the form of a yellowish tinge, but no hint on the lunar face and the terminator was beautifully clear and crisp through my BST Starguiders.
Last night I cruised around some familiar DSOs while I got used to the scope and mount - M42, M43, M45, M31, M35, Double Cluster and some double stars in Orion (Struve 747, Struve 745, sigma Orionis and iota Orionis). I was really pleased with the views - stars were pinpoints across most of the view with just a hint of distortion at the extreme edges. At just 40x I was able to see all three components of iota Orionis, and they were easily split at 75x. Similarly, stars D and E in sigma Orionis were easily separated from the main ABC stars. Overall, the telescope is perfect as a 'grab and go' small achro with limited CA.
Unfortunately, I'm less impressed with the AZ5 mount. It's really not very steady at all, and any attempt to fine tune the focus led to the view jumping around and taking a good 2-3 seconds to dampen down. It was a still night, and I hate to think what the view would have been like had it been windy. I got the mount used on eBay, and it lacks the pillar extension - I've therefore ordered one from FLO in the hope that having to extend the tripod legs less might improve its steadiness.
Anyway, there you go. In summary - scope good, mount less so.