Quote:
Originally Posted by DJScotty
Hey Slawomir
I tried your suggestion with no tension at all on the filter and there was no difference. Still producing very odd shaped images.
I am imaging tonight with the OIII Baader filter in. Beautiful imaging!
SO...
That sounds like a cunning plan my good man...
So you would go Astrodon over Baader? And when you say PRICEY, what are we looking at and from where does one acquire such a filter?
Thanks Slawomir 
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Sorry to hear that the filter still does not work properly.
As for your question- Astrodon all the way. I bought mine directly from the manufacturer, just google "Astrodon filters". Was previously using Astronomik 12nm filters, they are very good, but not nearly as effective in increasing S/N ratio as 3nm from Astrodon.
P.S. Have you considered acquiring an electric filter wheel? I know...the plan is getting better and better...