seanpius Posted April 13, 2019 Share Posted April 13, 2019 (edited) Hi all can anyone tell what is happening in this graph or what i am doing wrong. Edited April 13, 2019 by seanpius wrong layout Link to comment Share on other sites More sharing options...
RadekK Posted April 13, 2019 Share Posted April 13, 2019 Looks like backlash in DEC. Don't use Auto in DEC, instead set North or South direction for DEC guiding. Link to comment Share on other sites More sharing options...
seanpius Posted April 13, 2019 Author Share Posted April 13, 2019 thank you Radek,will try when skies clear. Link to comment Share on other sites More sharing options...
michael8554 Posted April 14, 2019 Share Posted April 14, 2019 Unless you have a need to use PHD1, worth upgrading to PHD2, it has a lot of tools for setting up and diagnosing problems. To expand on Radek's reply, if you set your PA to drift about 5arcmins, balance the scope to be heavy in that direction, and set a largish dec min move, then the dec won't yoyo north then south. If you Dither you will have to set Dec on Auto and set backlash comp and Agression to catch dec as best as you can. Michael Link to comment Share on other sites More sharing options...
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