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Collimation Difficulty

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Posted by Dave Sellors on June 3, 2003 16:29:42 UTC

Through my research on building my 10" dob, the lower the f/ratio, the higher the difficulty in collimating. There's a tradeoff between a short, convenient tube and the battle to collimate it. I had little choice here in Canada for a 10" f/5 mirror, would have bought f/6 if available.

I will have a better opinion on this in a few days, I'm putting my scope back together (just painted it), and will collimate it.

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