[MrB (Simon)]

Originally Posted by skysurfer

A better alternative

For who?

only 1kg heavy

Same

has a pole finder

Same

fits on a photo tripod

Same

and can carry 3kg

15kg

and runs on just 4 penlites (5V)

only 4 more(12V)

True, the other trackers are cheaper but they are also less accurate (AT claims 5 arcseconds peak to peak over 5 mins), they don't have Autoguiding capability, and they can't take a load much greater than a camera body and medium sized lens.

Being able to take 5 to 10 min unguided subs with longer focal lengths on a system that fits in a backpack means, for me, the AT is the better alternative.

Being able to mount two scopes side by side and a guide cam, while still remaining very portable means, for me, the AT is the better alternative.

Different needs, different gear.
Apples and Oranges.