beam-
              splitter     dichro
to ccd ----------/------------/---{---------- to telescopes
                 |            /   {--> retro
                 |            /
                eye           fiber

Repeat cycle for each beam. Steps 1-6 before dark; step 7 with star.
All visual adjustments are via alignment telescope at end of long table.

1. Align optics toward telescope.

• Use alignment telescope and 45° BeamSplitter [fold mirror] toward telescope.
• Keep mirror adjustment map for South Delayed or North Delayed handy.
• Vacuum in tank.
• ST tip-tilt electronics on, switched to the null state.
• LD at home.
• Focus eyepiece first then focus telescope on exit mirror.
• Adjust the fold mirror to center the exit mirror flip-in LED on crosshairs.
  • This adjustment is slightly different for each of D1, D2, and F.
• Focus on the horizontal mm scale at bottom of SD.
  • Tilt exit mirror in X to put vertical cross hair at 27=SD1, 28=SD2.
  • Ignore vertical centering.
• Move the LD to about 2000 cm position or more and focus on it.
  • Ignore the white cardboard baffle and its fiducial marks.
  • Yaw SD to center vertical crosshair horizontally on the LD mirror
  • (not the reflection through the mirror, ie not the red LED).
  • Ignore vertical centering.
• Focus on the corner flip-in LED.
  • Yaw LD to center horizontally.
  • Tilt exit mirror to center vertically.
• The above steps should give zero vignetting at any SD, LD positions.
• Continue to feed, piezo, end on secondary cross-hairs.

• Turn on fiber x-y piezo;
     center the 10-turn pots at 5 turns or begin "Observe".
• Turn on and carefully position LED fiber illuminator to shine a spot on Integrated Optics.
• Insert 6.5-inch high retro centered in path between dichroic and telescope.
• Dichroics occasionally needs to be adjusted so that the fiber feed mirror is centered (use target).
• View bright fiber output spot, center on crosshairs by tilting fiber feed mirror.

• Illuminate CCD with bright desk lamp.
• View CCD
• Center coarsely by tilting CCD mirrors (a helper is useful).

• Set up laptop near CCDs
• Monitor CCD output image [ cd XDisplays, Startracker_Display]
• Fiber x-y piezo still on.
• Ajustment to 1/20 of a pixel is done with picomotors by option 6 in the Observe_g3.2 program (align fibers to CCD).
• (manual option) Turn CCD mirror screws to center fiber image in quadrant, to ~1 pixel.

• Illuminate parabolas with light from secondary covers.
• Adjust x-y screws on lens mount to center 6-spot IO image on pixels.
• Adjust z-screw to focus spots.

• Find star on acquisition TV.
• Spiral search, lock star on CCD.
• Run Fiber Explorer (#5) in Observe_g3.2 program to peak up on star.