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Firstly, the tracking of that mount is not bad, good enough for basic astrophotography, but as it is an alt-az mount, field rotation becomes a problem after 15 seconds or so.
Secondly, Maks are almost useless for general deep sky work, as they are
extremely slow photographically, having a focal length of around f/13.
They are great for small bright objects such as planets and bright planetary nebulae, and also for the moon.
I assume that the chromatic aberration that your 80mm has is why you want to upgrade. You could get a used Skywatcher ED80, a very popular 80mm scope, which would almost eliminate the CA.
I would not put a 130mm Newtonian on that mount for AP work, too much
vibration.
A 130mm SCT is shorter, and therefore more stable, but still very slow
at around f/10.
Your alt-az mount restricts you to short exposures, so you need a
reasonably fast scope. I reckon your best choice is the SW ED80
or equivalent.
raymo
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