After struggling for months trying to train the PEC on my AP600 manually,
last night I tried using the autoguider on board the ST7 for same. Here
are the result from the first and last images of the night, after training. The
pixel scale is 1 sec/pixel. The first column is Dec and the second is RA:

ST-7 Track List
Version = 1
Snapshots = 10
Snapshot_time = 30.00
Temperature = -5.23
Height = 500
Width = 765
Offset = 0
0, 0
0, 1
0, -1
0, -1
0, -1
0, -4
0, -5
0, -6
0, -7
0, -9
End


ST-7 Track List
Version = 1
Snapshots = 10
Snapshot_time = 15.00
Temperature = -5.23
Height = 503
Width = 760
Offset = 0
0, 0
0, -1
-1, -2
-2, -3
-2, -4
-2, -7
-3, -7
-4, -7
-5, -6
-5, -5
End

Bob Kuberek