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I collimated my16” f/4.5 for 9 months with a drilled 1.25” cap before investing in a combined lightpipe/sighttube. It was like getting a telescope upgrade. All of a sudden I understood how people could see mottling in some nebulae.
That said, I haven’t used a cheshire and never got my laser collimated so I assume either of those work well too.
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