Twilight images with PV to support mirror swaps v02

Purpose: We would like to image mirror in the array with the PV camera in twilight.

Procedure:

1) Move the dome and structure to 0 (155 if wind is an issue)
2) Move out the ACQ arm and move in the CWFS/PV arm
3) Move the slide to the PV
4) Move the tracker to the center
5) save twilight image (flux ~150)
4) Move the tracker to the upper right
5) save twilight image (flux ~150)
4) Move the tracker to the lower right
5) save twilight image (flux ~150)
4) Move the tracker to the upper left
5) save twilight image (flux ~150)
4) Move the tracker to the lower left
5) save twilight image (flux ~150)
6) record all required data and move images to the NWD

Data to save

1) Save the data dump
2) Save the names of the twilight images saved

Analysis: Report saved data in the RA log