Re: [ATM] Advice on Solar scopes/observation

["Nils Olof Carlin" <nilsolof.carlin@telia.com>]

Tony

> I wonder, has anyone tried the Baader "diffraction limited" solar film
> material sold by Astro Physics?
>
http://www.astro-physics.com/index.htm?products/accessories/solar_acc/astrosolar
>
As I recall, it was widely discussed on lists after its introduction a 
couple of years ago - and I think the consensus was it equalled or surpassed 
most if not all "rigid" filters - and certainl compared to mylar filters.
I personally find it very good (as well as cheap), and ideal to add to 
existing small telescopes - here is a 10" using most of a small sheet:
http://web.telia.com/~u41105032/updating/Party.jpg
Of course, you should always secure it against falling/blowing off (I use 
screws), and also protect the filter material from scratches or other damage 
during storage - and replace it if you can detect many or large pinholes 
(since both sides are covered, pinholes let much less light through than 
they do on one-sided filters!).

And don't forget to cap the finder!

Nils Olof 


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