yes. Interesting ioptron AZ PRO.
does it therefore have a pointing system with mobile devices such as the celestron nextar evolution?
I should use it with an FS102NSV and with a tube yet to be decided (a mewlon 180c, or a C8 or a Mak150SW), the first view the second for shooting.
Does it track well for planetary imaging use (2/4 min)?
Yes, the azpro can be wifi controlled from your tablet. I use a Samsung Android and Sky Safari.
As far as loading on the secondary saddle....maybe 8 pounds, certainly not a tube the length of your fs102.
The saddle slips onto the counterweight bar and then a single bolt keeps the saddle in place. Any out-of-balance on that side causes the saddle to slip or the counterweight bar to turn (in my case).
On mine, I've used the Mewlon/103/92/90 on the main clamp and the 81 or a 90mak on the secondary. Its fun to compare the different presentations.
When leveled, the pointing is very close. Tracking is smooth, it is far better than the stairstep of the Evolution mount. Yesterday, i used the 90mm f9 and hit the carbon star list that's available for sky safari.
As noted previously, it seems my Atlas has a bit smoother tracking, is much more tolerant to out of balance, but the pointing is not quite as accurate....but I'm not nearly as accurate when leveling it. Also, its easy to add a wifi or bluetooth. Mine operates on an old bluetooth rig.
I can say your search for a nice optic was easy. Finding the right mount might be more of a challenge.