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David
I am in the same position as you, and have looked forward to some of the responses from this thread. I have recently purchased a DMK, and to date, I am very pleased with the shots. Like you, I am reluctant to purchase a filter wheel and filters if I have trouble with focus. I have a crayford, with only 18mm of inward travel remaining. The filter wheels I have looked at require between 20 and 30mm of inward travel to focus.
From what I have read, it seems that most people use a barlow in the setup to achieve focus. But I am still a little confused and suspicious. It seems that "telescope-barlow-filterwheel.." is the way to go. I have also seen a suggestion that "telescope-filterwheel-barlow.." will also work.
I am wondering if this is a typical setup.
Darrell
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