Guider and Stage

Here is some more analysis from Nov22.

Run2

This was a repeat of Run1 running the findcenter script except a second picture of the science CCD was shown with better evidence that the star was centered (row=519 col=513 bad trefoil).

1. stage x=-95 y=103.2  row=367  col=792 
2. stage x=-96 y=103.2  row=370  col=639
3. stage x=-96 y=104.2  row=206  col=641
4. stage x=-95 y=103.2  row=390  col=1125   offset dec=.01
5  stage x=-95 y=103.2  row=735  col=1097   offset ha=-.01

What we learned:

-1mm x decreased columns by 153
+1mm y decreased rows by 154
Movement consistent with 6.45micron pixel size (155pix/mm)
Cardinality the same 1 degree
Moving North increases columns
Moving East increases rows

Conclusions

From the position of image:2 we find that we need to change the nominal center:

increase rows by 0.96mm ; decrease Y to 102.2 
decrease cols by 0.35mm ; decrease X to -96.3