I copied this jpeg and then in Irfanview rescaled it for printing out the appropriate size onto A4 paper. It gave me masks that worked perfectly on my ED80 and 127mm scope without any alterations except for the size.
What a really pleasant surprise and focus is absolute. I was never sure before where exact focus lay but this nails it perfectly. Just so easy to use.
Again thanks Denis and Mr Bahtinov.
Allan
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