The orientation of the mask (blue side as seen in the quicklook tool ds9) and the blueprint (as depicted by the mask tracking data base) is as follows:
...
The green region also corresponds to the upper CCD in Autoslit.
Guider Images
Guider images can be found on /net/storageserver/operations/dataArchive/k1/20/07/18
LRIS BLUE Details
Ds9 does not display temp images. The images have to be written to disk