Model 2
Straight-vane Spider (GSO Replacement Model)
Installation & Use Guide
Rev 7/20
Step 1
:
Install your secondary mirror
into the holder
1.
Remove the shroud screws and shroud.
2.
Wash your hands and trial fit the secondary mirror
into the shroud. The mirror should slide freely within the
shroud. If it does not, contact us (
protostar@fpi-
protostar.com
or
614-375-3146
). Secondary mirrors
are sometimes slightly larger than advertised, and we can
provide a custom shroud.
Forcing the mirror to fit can cause
severe optical problems.
3.
Slide the mirror and shroud together over the holder
body. Reinstall the shroud screws, and only lightly tighten
the shroud retaining screws.
4.
Wiggle the shroud to ensure the mirror is seated on
the hard point supports and the shroud's slotted holes
line up with the holes in the holder body.
5.
Tighten the shroud screws.
Step 2:
Join the holder and spider
assemblies
6.
A
djust the three collimation screws until they are
protruding from hub by approximately 1/8" (3 mm).
Protostar P.O. Box 368 New Albany, Ohio 43054 USA
614-375-3146 [email protected]