Cracker article Bird, and coming from you it is obvious that you know what you are on about.
As Rumples said, with such a comprehensive article, not much else can be added.
One thing I did wonder with Rumples and his artifical star, if you collimate in the horizontal position, does this change much/at all when you go vertical?
An imaging workshop IS beneficial, and one was run mid this year, with another planned next year (In NZ).
Gary
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