I only went to 230x which is my 13mm Nag with a 2x barlow. I also tried 187x with an 8mm Orion Stratus, but view was not goos so didn't bother barlowing it. I know I needa good ep in the 5-6mm range, just ahven't decided what I want to get. What do you use for the higher powers in your 12"?
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