G11 tracking speed/polar align
Posted 03 February 2011 - 07:36 PM
I am trying to align following the declination drift alignment. I go through the all drill, from south to east and back. I take my time on each side (S/E) and adjust Az/Al accordingly.
The thing is my G11 is not tracking the way it should... the star keeps drifting East along the reticle. No matter which star I pick: North, South...
I have been told it can be a motor issue, I mean, the RA motor is "speeding up".
Has anyone in here had this kind if issue?
I am really cornered around here and very frustrated I cannot polar align properly.
Thanks for your help.
Posted 03 February 2011 - 11:40 PM
By the way, assuming that north is up in youar drawing, and you are using a diagonal, then your East - West designations are incorrect. With the EP ained north when using a diagonal, the left right orientations are reversed.
Posted 04 February 2011 - 12:36 AM
Mis-alignment in Dec will cause field rotation, which can't be guided out. So that's the axis you need to nail when you're drift aligning.
Posted 04 February 2011 - 08:49 AM
What I do is first align on 4 stars in the West, then 4 stars in the East. Find a star that's barely west of the meridian and as close to the Celestial Equator as possible. Goto that star and center it. Now, goto Polar Axis Correction. One tip; before enabling it, look through your scope or finder so that when you enable it, you can see which way the star moved. Enabling PAC, the mount slews to where the star would be if you were polar aligned.
Now, using the mechanical adjustments, center the star. Once centered, redo your pointing model and you'll be good to go!