Quote:
Originally Posted by rcheshire
The reason I didn't buy it, was concerns about rigidity - I think these are unwarranted providing the tripod / pier /wedge is solid enough.
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You are right that rigidity comes entirely down to the tripod it is on, and what you use to angle it at the SCP (wedge etc). The AT its self really doesn't have anything which can not be rigid, it's flat surfaces against flat surfaces. A solid tripod, the more solid the better, is a must.
Quote:
Originally Posted by rcheshire
A second reason was the quality of the finder scope. Which I hope is fixed, after mentioning its shortcomings (build quality) to the manufacturer. I bought one to align the Tracker - and it worked very well with some modification.
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I wouldn't rely on the polar scope in the southern hemisphere. Bit hard to use. I don't recall them changing the design but maybe if you think so
Quote:
Originally Posted by rcheshire
I think the <5 arc seconds peak to peak (no correction) is conservative. A good tangent arm is quite capable of that.
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I have never seen error in my photo's which is in RA and not a result of polar-mis-alignment. Most of the drift I see is due to atmospheric refraction because I often image with the horizon included and continuing up to a reasonable altitude (wide field).