Hi all,
Cloudy/Rainy night tonight here in SA, so I decided to clean my mirror.
Not as much of a drama as I thought it would be.
Followed all the advice on this site and on the web which is great.
Just want to add a couple of things...
1. Mark a line with texta non the outer lip of the mirror cell to line up with the screws which hold the cell in place - this will make replacing the cell easier after cleaning.
2. When you try to replace the mirror cell after cleaning you may find that the cell wont fit back into the tube as easily as it came out.
The cell may "keep" the shape of the tube when in place, but when removed the tube shape "relaxes" and can distort slightly making the cell's return a bit more difficult.
I got my son to lightly push the sides of the tube back into a round "o" shape so that I could replace the mirror cell - which I did!!
My Dob is 2nd hand so this might not be a problem in newer scopes - but why would you clean a new scope's mirror???
I've attached a text file with all the cleaning info that I gleaned from the net.
Hope this helps somebody.
Cheers
Doug