[hotspur (Chris)]

Had a go last night.

these are the settings I had changed RA aggressiveness settings on 50% rather than 100%.

Backlash comp set to 0

the 'calibration step' in PHD set to 1300,it was on 950,the smaller F length of gude scope-the bigger the number needs to be,I am using a 'finder guider'style scope approx only 200 mm long,or shorter.

See 4 images and there crops immediately following them.Image 1 was on the object for well over half an hour,before I took this image,this is what I would like to achive 80% of the time-is that plausible?

The other images,were not on the objects all that long before I took the images,after 1 (I had to change a battery),so that is why view in 2 and 3 is different,even though it the same object.

2,3,and 4 do show some trailing,but appear better than last weeks episode.

MAy be the experienced AG'ers here can assess these,and see if there is any meaningfull improvement.what else could I do to improve?? may be lower the aggressiveness???,I spoke to another owner of this same mount (a Japanese made Vixen GPD2) he has lower aggressiveness set.

May be lower calibration step amount again?

The seeing conditions were not the best last night,cloud about,moisture in air,moon light.But I just wanted to see I could minimize the star trailing etc from last week.

The AG seemed to work better,no loosing star all the time like last week.no noisy steps in mount/motors when guiding.

all images 5 min exp,except the last was at 6 min,focus was a little out

Thanks for any pointers-Chris