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I seem to have been lucky with collimating my scopes previously an SCT, a Vixen VC200L and finally a 10" GSO RC.
I had tried laser collimation previously but realized very early on that if it's not perfectly centered in the focuser you can forget any adjustments as they are off line. I learnt early with the VC200L that Vixen had its collimation well thought out and that it's all done by eye. And guess what, it works if each step is done carefully and precisely. Until I followed the vixen method I had the classic triangular stars but then collimationg as a final step on a real star and using Al's collimation aid I had it spot on and it stayed there. The next scope was the 10" GSO RC and I used David Cortners procedure (hall of mirrors), then a real star and finally Al's collimation aid. No problems at all and the scope has survived travel and remounting many times in the last year.
I have the tilt plate but never attached it to the RC as I havnt needed it.
Allan
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