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  1. #1
    bebilja's Avatar
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    Cool collimating heritage 76



    Someone has asked me to collimate their son`s skywatcher 76 dobsonian telescope,and when I looked at it the secondary mirror is only held by one rod of metal,so I am not sure how to check if its central.I am not sure why he asked me as I am not that knowledgable about these things,so I thought I would check with the experts.Sky watcher website is as usual no help at all.
    Thanks in advance

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    Yup - thats the heritage. It does only have a single spar that holds the secondary. I have never seen one close up so I have no idea what adjustments are possible.

    Its a very small scope so although its quite a fast F ratio collimation wont be super critical for it.

    You could take a look at my collimation guide on my website. The collimation could be donw on that scope with just a collicap.
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  3. #3
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    Default

    The secondary has 3 small adjustment screws but the primary can't be moved at all. There's also no center mark on the primary so it's not like you'd know by adjusting the secondary if it is collimated or not.

    Really there's nothing that can be done on these and they're meant to use as-is.

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