)Impression of Obby is that the woodwork and mechanics are excellently made. The scope is very smooth and I can just use one finger to push it and the altitude bearings are real large and nice (sort of like large tyres on cars.). The structure is very stable and I attribute that to good design. All in all mechanically and looks are excellent in my opinion.
The optics is a 12.5 inch diameter f/5 mirror. The test report is 97 percent strehl ratio. I star tested it and the inside and outside defocus star image is similar. There is slight spherical aberration by observing a slight difference in brightness on the rings compared to the reverse side of focus. There is no graduation in ring brightness which means that the optic is exellently corrected though not perfect. I have done ray tracing simulation on what a 97 percent strehl ratio f/5 mirror would look like and it conforms well to my simulation. Hence I'm happy with the optics as it is excellently corrected and corresponded to what I simulated.
So far I have looked at Jupiter and it looked much better than my other scopes. The cloud bands can be seen really clearly with the twirls. One of the nights I saw the Great Red Spot (actually my first time as I don't really look at planets) and it was very obvious. I could see it at 90x! (the planet is like so small at 90x and I could see the GRS).
I would look forward to deepsky views as that is primarly the reason why I bought this scope for. I bought the Argo Navis DSC but unfortunately the unit I have failed to power up properly and I had sent it back to Australia for replacement. I have not received it yet so I cannot give any feedbacks.
On the whole I'm happy with my purchase. It would be better if I see DSOs. Here are some pictures for those who are interested to see how it looks like.
