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Thread: Where to find affordable mirrors?

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    Question Where to find affordable mirrors?



    Hi y'all

    Right off the bat i'd like to clarify that I'm very new to telescope building. I saw an interesting project where I could print my own reflector telescope and wanted to try it out. it's the "ABSDBS-8" ver. 0.71b" on thingiverse

    However I'm looking through the hardware I need to buy and it's more expensive than I was expecting. I need an 8" main mirror with an ~1000mm focal distance, A spider, secondary mirror, and a focuser. Buying an old telescope for parts seemed like the best choice but the selection of telescopes on the sites I checked wasn't very good.

    and advice on where to buy cheap telescopes would be much appreciated!

    P.S. I'm sure there's some more technical details i'm leaving out so let me know if you need any more info
    yobbo89 likes this.

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    Pauls72's Avatar
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    Default Re: Where to find affordable mirrors?

    Agena carries GSO mirrors which are reasonable.
    https://agenaastro.com/gso-parabolic...f-5-ad049.html
    https://agenaastro.com/gso-elliptica...r-62-5-mm.html

    You will find it cheaper to buy a complete used scope. Have you looked here?
    https://www.cloudynights.com/classif...ort_order=desc

    Note: Astromart is a good place to find used equipment. Unfortunately they want to hit you up for $15 a year to subscribe.
    https://astromart.com/classifieds/as...eflectors/show

    You can also buy mirror blanks and grind your own mirror.
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    Default Re: Where to find affordable mirrors?

    then there is also Craiglist, if there is a local seller it is easy to check out the telescope. Many people have said that they have found some excellent buys, on the other hand, many people have been burnt as well. Caveat emptor! If you can take a friend who knows something about telescopes? Others have mentioned 'finds' in second hand shops as well. Part of this hobby/interest/passion is that there is a constant search - for equipment or objects to observe or image. . What I would suggest too, is that if and when you do find something, let us know here - utilise the expertise held by many on this site. Good Luck!
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    johnyjf's Avatar
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    Default Re: Where to find affordable mirrors?

    I have bought a number of second hand scopes on reputation only and been burned once with a mirror that was absolute rubbish in decent tube hardware (luckily not too expensive). Use caution and try to get a star test before handing over your cash. Don't accept poor collimation as a reason for a bad image. It doesn't take long to tweak a scope sufficiently to get a decent star image even if it isn't 100% spot on.

 

 

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