Quote:
Originally Posted by gregbradley
Thanks Peter. Makes sense on the definition. Fiducial mean fixed.
I did another 200 point model tonight. I implemented the accurate polar alignment actions. I realised when I did it before I first had done the ajustments from the Polar Alignment report first then the accurate polar alignment adjustments plus I was not careful enough about centring the star in the image.
But tonight I did it very precisely and one axis was perfect the other was still off. With Protrack tracking adjustments activated it helped but still you could see it was fighting drift. So I did a quick Pempro polar alignment wizard and indeed the Azimuth was perfect but the altitude was a it off. A couple of quick adjustments and it was spot on and now very round stars (not perfect but then its poorish seeing) with protrack on.
I am seeing some spikes though. I hope that is the seeing and not some dirt or fraying belts in the mount. But round stars I am happy so both tools were helpful here.
Plus it pays to carefully read the instructions! (accurate polar alignment instructions).
Time will tell if that drift is corrected generally or only for one patch of the sky but to be honest I have never noticed any mount to guide well in one patch and not another. Usually better when the scope is pointed near the zenith.
Greg.
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Spend 30 minutes clearing your PEC, collecting, applying, and verifying a new one with PEMPro... I did this recently after my PME and PMX performance suddenly degraded when we had 2 weeks of -6 and below. I am assuming you're re-greasing routinely as is advised too?