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Warren at Astro-Optical was kind enough to add more information:
1. I know the mount has PEC, what's the PE before and after correction. If you say its 8 arc/secs before and as good as 2 arc/seconds after - you've answered my original question which remains was what is the raw, untrained PE; not does it have PEC yes/no - which is clearly advertised as a yes
The PEC is to adjust for the PE of individual mounts as they vary in manufacture. We are unable to put a number on this correction.
2. Currently the SXD forgets PE training on every power down - a real bummer for those of us with permanent astro labs, is Vixen thinking of fixing this and if so by when?
Vixen have not announced such a modification
3. Is 15 KGs the load capacity for astrophotography or visual? Generally they and Takahasi are very conservative on their carrying capacity. The six largest suppliers of scopes in the USA still quote 22.7 Kgs (for 4 months now) and the question has be raised multiple times on both Yahoo Groups for Vixen and CloudyNights - the two main online interest groups for astronomy in the USA. Vixen has stated stunningly quiet as to why the major US sites still insist on telling US suppliers (upon multiple customer queries) that the carrying capacity is 50lbs.
It really is only Americans love of big numbers. This mount will accept a 15Kg telescope (this is what we call its load capacity) add two
3.7Kg counterweights & you end up with the mounts total loaded weight of 22.4Kg which is 49.38Lbs.
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