Re aluminizing the 200inch Hale mirror! Great footage.

[M54 (Molly)]

Hi all,

I was looking up Youtube for instructions on cleaning a mirror and found this cool film...

http://www.youtube.com/watch?v=jZojJ...eature=related

Also found this one regarding cleaning a mirror for anyone who needs some directions, like me.

http://www.youtube.com/watch?v=8TObET2F-EA

Molly.

[supernova1965 (Warren)]

Thanks Molly

Just think then they have to collimate the the Hale Telescope . We think we have trouble getting it right imagine trying to do that one

[alistairsam]

i've been using the method similar to the one in the second video clean my 8" primary, but i've only used demineralized water and not tap water as shown. i've had no issues and would recommend not using tap water.
quite easy once you get over the "anxiety" over cleaning the mirror and causing scratches. obviously common sense prevails.

i wonder what the "rock" like structures were in the hale mirror once the aluminized surface was removed. looked embedded in the glass.

[M54 (Molly)]

Originally Posted by supernova1965

Thanks Molly

Just think then they have to collimate the the Hale Telescope . We think we have trouble getting it right imagine trying to do that one

I have enough trouble with 5 inches.
I'd like to see their screwdriver.

Originally Posted by alistairsam

i've been using the method similar to the one in the second video clean my 8" primary, but i've only used demineralized water and not tap water as shown. i've had no issues and would recommend not using tap water.
quite easy once you get over the "anxiety" over cleaning the mirror and causing scratches. obviously common sense prevails.

i wonder what the "rock" like structures were in the hale mirror once the aluminized surface was removed. looked embedded in the glass.

Thanks for the tip on mirror washing Alistair.
The "rock like structure" is actually the glass, they had to put a ribbed pattern in the back of the mirror to make it lighter.
Here is some info from an old book I've had since I was a kid. (A long time ago).

[M54 (Molly)]

Here is the other part, for some reason it wouldn't upload till I resized it, although the other one was ok.