27
Focus the slit by manually
pushing or pulling the
eyepiece.
After having focused the
image of the three slits, lock
the eyepiece by using the
locking screw (#4) of the 1 ¼”
slit viewing port (#3).
Open the set screws of the
stop ring and move it ring
down to sit flush on top of the
eyepiece holder. Tighten the
stop ring to secure proper
focus position.
DADOS with mounted slit-
viewer assembly.
