Mikael Lindkvist

I also have a reasonable new EQ6R, it is my first motorised mount and previous season was the first time I used it with the rest of my gear Celestron 9.25 XLT,/Celestron OAG. Since I was completely new to astrophotography I was pretty happy with getting decent images of galaxies etc. My guiding was almost never below 1" but I did not know what to expect so I did not pay it a lot of attention. Now I see people guiding with this mount at much higher accuracy so I have been investigating what the problem might be. I started by trying to eliminate potential problems related to PHD settings and sent my logs to the open phd guding group where one of the maintainers noticed that there is a 1" spike in RA every 10s that is not related to PHD (it was recorded without active guiding). I have not tweaked the actual mount yet but your improvements after loosening the Ra/Dec axis and doing some tightening of the belts and RA worm gear sounds very interesting! Maybe that could also improve my mount performance? Did you follow any guides, specially for the RA worm gear adjustment?