Thomas

I would like to add one more comment to our discussion about ?€?Outgassing?€?
on your mirror.

I Iooked at the picture of your mirror again and noticed something
peculiar. It looks like this haze on your minor, if deposited by something
that is released into the air space inside the OTA, is it not deposited
evenly on the whole surface of the mirror. If the picture is correct you
have area, a ring or band if you will where there is no deposit, just the
central region is hazy. This is very peculiar. If something was floating
around in the OTA like dust or particulate matter of any type it would not
be selective in its deposition. It would coat the entire surface evenly, so
this leads me to wonder if maybe you store your scope pointing down.

This is just a theory but if the mirror is looking down like a bowl upside
down and grease is melting and getting past the hole in the mirror around
the baffle tube it could flow out evenly from the center of the mirror. This
could account for it not reaching the outer edge of the mirror, YET.

Do you store your scope facing down? Has it been stored facing down setting
on the ground, shelf, or other such surface in a relatively warm or hot area
like a garage for any extended period of time at elevated temperatures?

One last thing..

Are you sure this is not a reflection?

Gary
.