Quote:
Originally Posted by koputai
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It would be a lot easier if I took the spider out of the tube, but I'm really scared of having to do a full collimation from the start....
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Have no fear, rip that spider and secondary out. Just undo the external "nuts" and ease it out and place down gently - if your collimation screws are firm, the secondary should not move relative to the spider. When all done, reverse the process. Didn't seem to cause any major collimation issues in my 8". I guess centering the spider again might be an issue. In that case, count the exact number of turns for each "nut" to come off and replace them with exactly the same number of turns. I didn't do that.