Clean the optics of the Mira

• Always close shutter of Verdi, before cleaning a mirror.
• Use Acetone PA for cleaning & hemostat. Clean every optics once.
• Remove tube between Verdi & Mira. Clean output mirror of Verdi & input Brewster window of Mira at the outside.
• Reinstall tube
• Remove left top side : the little things at the sides flip up as wings, and can be used to lift the cover. The cover might be a little sticky. Lift wing, and push with other fingers on the laser, between the edge of cover and laser.
• Also remove the side panel, facing the Verdi. Push button downwards.
• Clean all optics.
• To clean the crystal, remove the little tubes. Be careful not to scrape the crystal with the left tube.
• To clean the lyot filter, remove it first.The small 1/16“ screws releases it. Only 1 way to reposition it.
• The left side of the dichroic mirror can be reached, without removing the mirror.

NB : after opening the Verdi shutter again, the Mira stays for several minutes on monitor=0.68. Then the monitor very slowly starts to rise.
It takes at least 5 minutes, before it is at it's maximum.
Realigning is hardly needed.

According to Ben, the Mira is cleaned at most once a year.