I hope someone can give me some advise here.....

Anyway, today I went to clean my very grimy LX200 corrector plate and 
after an initial wash with isopropyl alcohol & distilled water, I 
painted it with collodion to get the remaining bits off.....

Now, I've succesfully used collodion on several occasions with smaller 
optics, but this time it didn't come off cleanly (maybe 2-3% has stayed 
behind and now doesn't want to come off), and where it has come off, 
the surface is pretty mucky and smeary.

Any ideas what to do next? Should I paint another thicker coat over it 
and try again, or can i dissolve it off with more alcohol and go about 
it that way.

I think I will take the corrector plate off tomorrow to make life 
easier, but wuld appreciate any tips on how to clean ff the remaining 
collodion.

Thanks!

adm wrote:
> I hope someone can give me some advise here.....
> 
> Anyway, today I went to clean my very grimy LX200 corrector plate and 
> after an initial wash with isopropyl alcohol & distilled water, I 
> painted it with collodion to get the remaining bits off.....
> 
> Now, I've succesfully used collodion on several occasions with smaller 
> optics, but this time it didn't come off cleanly (maybe 2-3% has stayed 
> behind and now doesn't want to come off), and where it has come off, the 
> surface is pretty mucky and smeary.
> 
> Any ideas what to do next? Should I paint another thicker coat over it 
> and try again, or can i dissolve it off with more alcohol and go about 
> it that way.
> 


 From Wiki, yeah I know...

Collodion is used in the cleaning of optics such as telescope mirrors.
The collodion is applied to the surface of the optic, usually in two or
more layers. Sometimes a piece of thin cloth is applied between the
layers, to hold the collodion together for easy removal.

On Sep 26, 5:26 am, Iapetus  wrote:
> adm wrote:
> > I hope someone can give me some advise here.....
>
> > Anyway, today I went to clean my very grimy LX200 corrector plate and
> > after an initial wash with isopropyl alcohol & distilled water, I
> > painted it with collodion to get the remaining bits off.....
>
> > Now, I've succesfully used collodion on several occasions with smaller
> > optics, but this time it didn't come off cleanly (maybe 2-3% has stayed
> > behind and now doesn't want to come off), and where it has come off, the
> > surface is pretty mucky and smeary.
>
> > Any ideas what to do next? Should I paint another thicker coat over it
> > and try again, or can i dissolve it off with more alcohol and go about
> > it that way.
>
>  From Wiki, yeah I know...
>
> Collodion is used in the cleaning of optics such as telescope mirrors.
> The collodion is applied to the surface of the optic, usually in two or
> more layers. Sometimes a piece of thin cloth is applied between the
> layers, to hold the collodion together for easy removal.- Hide quoted text -
>
> - Show quoted text -

You could use a solar filter to cover the corrector plate when not
using the telescope. This will make the cleaning only necesary over
long periods. And plus you get to look at the sun with the lx200.

Mitch Raemsch