I have mounted a green laser pointer on my dobs. It allows for quick relocation from star to star and gets scope pointed accurately enough for the more accurate sighting methods to kick in. Most often accurate enough for the main scope lens to spot the target. Also find when sort of star-hopping can more easily place the beam roughly say ⅔ or whatever between obvious stars. Easier to judge this way than by looking through rdf or even telrad if the reference points are further apart.
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