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With my 12” Goto dob under Synscan 2 star Az/ Alt alignment , if I don’t level my mount fairly accurately my Goto pointing is less accurate than when levelled. My dob sits on a driveway with a 5deg slope
With both my EQ mounts under EQMOD if I don’t level my mount fairly accurately my Goto pointing is not accurate, even when I sync alignment stars using 3 point + nearest
I can only assume that the algorithms written into the software for both Synscan and EQMOD have a platform requiring a level starting point with a small error tolerance
( some members who are a lot smarter than me may have a more satisfactory or accurate explanation)
With my experiences I have to level all my telescopes to achieve good really Goto and pointing
Cheers
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