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Rod Mollise, who has written several books on SCTs, has very recently posted on "that other forum" that Polaris is the only correct method of collimating an SCT and that the other methods lead to miscolllmation.

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Well, if Uncle Rod said it, it must be true. That aside, I can't help but wonder if it wasn't his primary concern that the star stay centered during the collimation. If you end up having to track the object during the process, it might indeed cause quite a bit of trouble.

Chris

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"To tread the sharp edge of a sword;
to run on smooth-frozen ice,
one needs no footsteps to follow..."

"Well, people sometimes ask me 'how did you get involved in astronomy?' I said 'I got born, what's your problem?'" -- John Dobson

"In discussing the large-scale structure of the cosmos, astronomers sometimes say that space is curved, or that the universe is finite but unbounded. Whatever are they talking about?" -- Carl Sagan

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