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Collimating a Catadioptric short tube newt with no tools?

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Is this possible? all i have is a simple home made collimation cap, and the primary mirror does not have a center dot.

i have succsesfully collaminated a reflector before using this cap with help from members here, but it was not catadioptric and it had the center marked.

I dont want too bite of more than i can chew, however id like too try and get the most out of this so far dissapointing scope, its 6" appature should have far more light gathering ability than this and im sure its down to collimation.

Edited by Madhatter
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