Re: [ATM] Lining a newtonian with cork - information required

["Marco" <marco.miglionico@btinternet.com>]

I tried this a few years back and it worked
very well.

The cork I used was about 2mm thick.

You don't need to adhere the cork to the tube inside
as the curve will keep it in place. Just make sure that the
edges are butted together to complete the circle.

I didnt black out my cork, but maybe should have!!

I belive this tip was in an old Astronomy Now issue.

Marco.

----- Original Message ----- 
From: "Think" <thiink@gmail.com>
To: <ATM@atmlist.net>
Sent: Thursday, June 15, 2006 10:33 AM
Subject: [ATM] Lining a newtonian with cork - information required


> Hello list,
>
> I am going to attempt to line the inside of my solid tube 10" F/5 Guan 
> Sheng
> branded Dob/Newt and require the expertise of you fine people. The 
> specific
> questions I have are as follows:
>
> - is lining the tube with cork still an effective method of 
> slowing/stopping
> tube currents? Are there better options?
>
> - I have searched in both Google, and around this list and have yet to 
> find
> specifics on how to adhere the cork to the tube, or if this is at all
> required?
>
> - The mirror is 10", and the tube OD is 12". If I use 4mm cork tiles 
> (joined
> together for the length/height required), I take it this should have no
> impact on the light path/other?
>
> - is there any caveats in regards to painting cork flat black instead of
> using flocking paper? Is flocking paper a better idea?
>
> If anyone has any good websites/books (that are available in Australia) 
> that
> can answer these questions; that would be great as well.
>
> Thank you all for reading,
> Simon
> NSW, Australia
>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/ 

_______________________________________________
ATM mailing list http://www.atmlist.net/