Orion Mak-Newt Oops...

Apparently the move did not go so well. The meniscus lens has come "loose" per attached pic. So... Now what? Anyone attempt to reattach the lens before and any particular challenges with aligning the optics again? I hope it is just a loose clip...

Cleaning suggestions for the lens since I am already need to open it up?

Jesse

Attached Image:

IIRC there are three small screws the hold the
corrector in place; each has a washer that seats
onto the corrector face. Probably what has happened,
is that one of the screws has come loose or fallen
out.

The potential issue for collimation, is if the
corrector has rotated in the cell. I think I can see
some alignment marks in your picture, and they
are still aligned, so maybe it will be OK.
The rotation of the corrector itself is not
critical, but the issue is that the secondary mirror
will also rotate and that is more critical.

As for cleaning, there are no special problems.
You will want to keep the secondary mounted
in place, if possible, to minimize the collimation
work needed afterwards. I would suggest to make
some cover for the secondary to protect it
while you are cleaning the corrector -- make some
cardboard tube or cut the lower section of a small
plastic bottle to go over it.