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    Default Irish users: Where to get mirror blanks for home made Dobsonian?



    I am building my own Dobsonian telescope but I am under a budget. Has anybody got advice on what you have used to create your parabolic mirror? Is there anywhere I can find cheap glass blanks? I'm looking for a 10 or 12" diameter at either 3/4 to 1" thickness. They are so expensive on-line! I'm quite excited to get this project started.

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    Default Re: Irish users: Where to get mirror blanks for home made Dobsonian?

    Depends on what you call cheap.... There is a 12" blank for sale in new Zealand for Nzd120, , but shipping could be pricey. Have you looked at off the shelf mirrors from the likes of GSO? A 10"mirror wouldn't be much more than the blank!
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    Default Re: Irish users: Where to get mirror blanks for home made Dobsonian?

    Erk, apologies for the necro post... Didn,t relies how slow this bit of the forum was moving.
    Bit of new info for the diy'ers, 24" mirror blank available here:
    24" Mirror Blank (Reduced-again) | Trade Me

    Mods, please feel free to move this to DIY telescopes if appropriate
    Note, I have no association with the seller beyond living in the same country
    Guan Sheng Optics 8"
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    Default Re: Irish users: Where to get mirror blanks for home made Dobsonian?

    Hi there ,and welcome to the forum

    I'm not sure that there is anywhere in Ireland you can get a mirror blank, but, even if there was, this is still the company to go for

    telescope mirror blanks & grinding tools
    Stevie


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    Default Re: Irish users: Where to get mirror blanks for home made Dobsonian?

    Hi Stevie. That looks a most interesting company. I am working my way around a new 200p Skywatcher but, being a retired mechanical engineer I quite like the idea of making something ridiculously large. Thanks for the link.

    Chris.

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