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Tracking with the reflector will be far harder - the issues are:
- sheer size - it will act like a sail in the slightest of breezes whereas you could use an ED80 in 15 knots and it wouldn’t budge on that mount;
- its far greater mass and rotational moment of inertia which means once it starts to move the wrong way it’s going to go a lot further than the ED80 will before it stops.
Add to that a newtonian is vulnerable to mechanical misalignment, flexure and thermal expansion which are much harder to deal with than using a refractor.
Start with the ED80 first and aspire to an ed150 next Christmas.
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