Sun filter

General physics and astronomy discussions not directly related to Celestia
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ElPelado
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Sun filter

Post #1by ElPelado » 24.05.2004, 09:17

I want to buy a Mylar film to make a sun filter. I asked in an astronomy store and they said that they have black polymer, and thats this is better than Mylar.... can anyone tell me what it is?
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EL XENTENARIO
1905-2005

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Adirondack M
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Post #2by Adirondack » 24.05.2004, 09:25

ElPelado,

may you should ask for "Baader Astro Solar™ Safety Film".

More informations (in English):
http://www.baader-planetarium.com/sofifolie/details_e.htm

I think, it is the best and healthy you can get...

Adirondack
We all live under the same sky, but we do not have the same horizon. (K. Adenauer)
The horizon of some people is a circle with the radius zero - and they call it their point of view. (A. Einstein)

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ElPelado
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Post #3by ElPelado » 24.05.2004, 10:26

I know mylar is good and is cheap, but i want to know what black polymer is...
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Post #4by Adirondack » 24.05.2004, 11:10

ElPelado,

"Baader Astro Solar™ Safety Film" is not a mylar film nor a black polymer!
It's something else but much better for visual and photographical use!

Quality sequence: Mylar -> Black polymer -> Baader Astro Solar Film

To answer your question:
Black Polymer: A lower cost alternative where only low magnification is used such as with binoculars, threaded camera filters and finder scopes. Stronger than Mylar with the filtering properties protected within the substrate.
We all live under the same sky, but we do not have the same horizon. (K. Adenauer)

The horizon of some people is a circle with the radius zero - and they call it their point of view. (A. Einstein)

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ElPelado
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Post #5by ElPelado » 24.05.2004, 11:21

It cant be used with a 3" telescopes using 35x or 56x??
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Adirondack M
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Post #6by Adirondack » 24.05.2004, 11:26

Any of the films can be used for your 3" telescope!
But the Baader film privides a better result.
No false colours, better contrast and so on.
That's all.
We all live under the same sky, but we do not have the same horizon. (K. Adenauer)

The horizon of some people is a circle with the radius zero - and they call it their point of view. (A. Einstein)

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ElPelado
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Post #7by ElPelado » 24.05.2004, 11:34

And its more expensive.... right?
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EL XENTENARIO

1905-2005



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Adirondack M
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Post #8by Adirondack » 24.05.2004, 11:38

It's about 20 EUR / US$.

What do you want?
A golden ring for 1 buck?

Or want to go blind and spare 20 Euros?
We all live under the same sky, but we do not have the same horizon. (K. Adenauer)

The horizon of some people is a circle with the radius zero - and they call it their point of view. (A. Einstein)

Topic author
ElPelado
Posts: 862
Joined: 07.04.2003
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Post #9by ElPelado » 24.05.2004, 11:55

Ok, I'll see what I can do...
And I think I will try to buy the black polymer or the baader...
Thanks
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EL XENTENARIO

1905-2005



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Post #10by Adirondack » 24.05.2004, 12:23

ElPelado,

where do you come from? Spain?
Maybe we can meet each other on October, 3rd 2005 near
Alicante to watch the solar eclipse...

... and you can have a look through my telescope with the Baader film. :wink:

Or are you still in Argentina?
We all live under the same sky, but we do not have the same horizon. (K. Adenauer)

The horizon of some people is a circle with the radius zero - and they call it their point of view. (A. Einstein)

Topic author
ElPelado
Posts: 862
Joined: 07.04.2003
With us: 17 years 1 month
Location: Born in Argentina
Contact:

Post #11by ElPelado » 24.05.2004, 13:31

Not argentina nither Spain, and i want the filter for the transit...
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EL XENTENARIO

1905-2005



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