Solar Continuum - leaky filter mount

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
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swisswalter
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Re: Solar Continuum - leaky filter mount

Post by swisswalter » Fri May 08, 2015 3:48 am

Hi Theo

interesting, that mod should increase the contrast. Mine is fully coated up to the edge. The sides it self I have to check
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Re: Solar Continuum - leaky filter mount

Post by marktownley » Fri May 08, 2015 5:34 am

I will have to check this weekend Theo, i've never been happy with my SC filter, maybe I have a similar issue?
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antonello
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Re: Solar Continuum - leaky filter mount

Post by antonello » Thu May 21, 2015 6:45 am

It is a normal thing... The filters are placed in a special plate which covers a little the periphery of the filters, before treatment under high vacuum ...
I have the filter 1.25 " and also to 2" inches. Both of the filters are not treated up to the edge, however, in the model by two inches the locking ring covers perfectly the untreated part, while, in the model by 1.25 ", the locking ring of the filter is many thin and it shows a little untreated part.
Antonello

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swisswalter
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Re: Solar Continuum - leaky filter mount

Post by swisswalter » Thu May 21, 2015 2:56 pm

Hi Antonello


......"Both of the filters are not treated up to the edge, however, in the model by two inches the locking ring covers perfectly the untreated part, while, in the model by 1.25 ", the locking ring of the filter is many thin and it shows a little untreated part."......

that is exactly the point
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

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Re: Solar Continuum - leaky filter mount

Post by antonello » Thu May 21, 2015 5:25 pm

I did not write that this is right ... :-)
I have just written "it is normal": all production is so, not only your filter.
The problem can be solved only by Baader doing a little less thin the ring block in the filter holder ...
or placing a new and bigger stop ring ... as you did. :-)
Antonello

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