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Old 16-09-2019, 09:51 AM
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troypiggo (Troy)
Bust Duster

troypiggo is offline
 
Join Date: Nov 2008
Location: Brisbane, Australia
Posts: 4,846
The best solution I have found to overcome this was kind of by accident. I have RA balanced pretty evenly, but have most cables (particularly the Mount Hub Pro power and USB) that drop down to ground on the east side of mount. This keeps it a little east heavy before and after meridian flips.

Quote:
Originally Posted by luka View Post
Not quite. The RA axis always moves in the same direction. Unlike DEC any guiding corrections do not change the direction, they only slow down or speed up the movement of the axis. The mount needs to be east heavy to keep the gears engaged properly during tracking/guiding. When you do the meridian flip so that the mount is west-heavy (counter weights on west side) the tracking direction will still be the same. The gears will be engaged "the wrong way" and the backlash will become important.
(That's why east-heavy approach requires shifting of counter weights after a meridian flip.)

The DEC axis moves both ways during guiding so I am not sure any more.
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