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Thread: Replacement eye pieces

  1. #1
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    Default Replacement eye pieces



    Hi all,

    I'm just getting back into astronomy. It's been several years since I've gotten the telescope out. Since it's been in storage, the eye pieces and level have gotten separated from the the rest of the equipment and I'm looking for replacements.

    I can't seem to find O.E.M. replacements on meade.com, Amazon, ebay or the Internet in general. I did find a set on amazon that from what I could tell was made by the same company and are the same diameter. However, I do have a question.

    Basically, if it's the same diameter will work? If not, can you give me some pointers please.

    I am pretty much an amateur when it comes to optics, but I'm going to go out on a limb here. Sorry, if I'm not using the proper terminology. Will the ratio of distance from the eye piece to the mirror related to it and the viewing lens will cause focus issues. Or am I way overthinking things.

    Thank You,

    MPH
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    Default Re: Replacement eye pieces

    Hello MPH!

    I've moved your thread over to the Eyepieces sub-forum as it will likely garner more useful attention here.

    Eyepieces come two primary barrel sizes, these being 1.25" and 2", with 1.25" being the most common. And pretty much any eyepiece can be used in any scope (barrel size permitting), though depending on the focal ratio, better corrected eyepieces work better with faster focal ratios while most all of them work great with slower focal ratios.

    So, depending on your eyepiece budget, you can pretty much take your pick of the various brands and focal lengths available. Tell us how much you are interested in spending either per eyepiece or as a whole, and we'll see if we can scare up a suggestion or two.
    Bryan

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    Default Re: Replacement eye pieces

    Hi,

    Welcome to the Astronomy Forum and thanks a bunch for joining.

    Your question <<Basically, if it's the same diameter will work? If not, can you give me some pointers please.>>

    Any standard 1.25 inch eyepiece will work in your ETX80. Don't worry about focus issues.

    A 25mm, something around 15 mm, and an 8 mm will pretty much cover the viewing range of your telescope. A 5mm eyepiece will be handy to have from time to time when seeing is good.
    Last edited by sxinias; 06-18-2016 at 06:56 AM.
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    Default Re: Replacement eye pieces

    Thank You, I did the inroduction. I must say I did not expect such a quick and warm welcome! I did search for eye pieces but didn't see the sub-forum.

    Thank you both for the quick reply and info! I very much appreciate it.

    I guess information is king! lol I have a Meade ETX-80 On the label there's no suffix, AT etc... It's probably 7 years old. From what I can gather it came with a 9.7 and a 26mm lenses.

    What I could find is a set of 9 for $150.00. If you search for "9 Piece Plossl Telescope Eyepiece" on amazon it should be the first one. I'm guessing for that price they can't be the greatest, but at this point, I don't want to spend more than my hobby can afford. I got a guitar that's calling me.

    Any help would be appreciated.

    MPH

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    Default Re: Replacement eye pieces

    That set of 9 eyepieces will work but is really overkill. You probably will never use most of them and their quality is suspect.

    Here is a set of three Orion Sirius eyepieces that will do well for your telescope (20mm, 12.5mm, and 7.5mm). They are of much better quality than the ones you are considering. You don't need a lot of eyepieces. These three eyepieces will cover the operating range of your telescope very well. The $50 you save will be appreciated by your guitar. Keep in mind that you have what is known as a rich field telescope. It is for viewing large areas of the sky, not for viewing planets and the moon.

    https://www.amazon.com/7-5mm-12-5mm-...e+Eyepiece+set
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    Default Re: Replacement eye pieces

    Thanks for the info on both the eye pieces and the telescope itself. The set you referenced looks very nice and saving money is never a bad thing. Especially if I don't need all the extra pieces. Unfortunately, that set won't be in stock until after I get back from vacation. Which is what prompted getting the telescope out of storage.

    There is another set that's close. Orion 10, 17 and 26mm, which is very close to what mine came with originally. Thoughts? That and if I order them before Monday, they'll get here the day before I leave for vaca!

    https://www.amazon.com/gp/product/B0...d_bhz_bw_c_x_1

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    Default Re: Replacement eye pieces

    I would consider that to be too much money for them, they are just standard plossl EPs. You can get good used plossl EPs on ebay much cheaper that will be just as good. People buy the kits, find they aren't what they really wanted and sell them off to finance a good EP. I would look at a couple of the longer length X-Cels and a barlow, or save some money and buy some used plossls (they perform well)

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    Default Re: Replacement eye pieces

    Thanks!

    Sorry but more answers lead to more questions... Along with the great advice given here, I've done some searching of the forum and the net regarding the quality of different EPs. I found a bit about favorites and best sellers, but not much (enough) about quality. I probably worded my search incorrectly, still working on the terminology.

    Are there particular brands that I should look for and most importantly, brands I should avoid? There seems to be quite a variety of manufacturers. I am on a budget and it always costs less to buy the right thing the first time. I.E. Spending less isn't always the best.

    From what I've found, so far Tele Vue, Celestron and Orion are the ones that stood out. Tele Vue & X-Cels are probably a bit out of my range at this point since I'm just getting back in to it... I am still researching the value. If the interest level stays up there, there's no telling where I'll stop. Muahahahaha

    Here's the kicker (twisted humor) I do realize that Murphy's law applies here. If you read my first post, you'll know I lost the original EPs. I know dog on well that as soon as the new EPs arrive, the old ones will come out of hiding. This is why I am leaning toward buying something of a bit better quality. Worst case, when I do find the originals, I 'll have first hand knowledge of the difference.

    I did find a set of Meade 9.7 and 26mm EPs (which is what the scope came with) on E-Bay for $35.00. Worst case that could get me going. If I ever sell it, I won't be loosing much. I am saving this option for a last resort.

    Thanks again I really do appreciate all the help,

    MPH

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    Default Re: Replacement eye pieces

    There are eyepieces and then there are eyepieces. Some cost far more than your telescope. You can study this thing to death and will still be trying to decide after your vacation is long over. I certainly would want more than a one or two day leaway. We all have fell into that trap. You have an inexpensive telescope. About the most you can push it is around 60 to 80x. The two cheap eyepieces you mentioned are probably very similar to the ones that came with the telescope. I would not spend much money for now. If you find you want to do more than what the telescope can do, you will be wanting a bigger telescope, not more eyepieces.
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    Default Re: Replacement eye pieces

    Thanks!

    Over thinking, yes, to death... maybe. lol Since nothing ships 'till Monday, I was trying to gather as much knowledge as I could before then. I had already pretty much decided what I'm ordering. It was between the Meade and Orion Sirius set. I will be getting the Orion set for a few of reasons. It was what you recommend, they seem to have better reviews, not too much difference in the cost for the 3 EP set and... if they are better than the scope, if I ever move up, they'll still be viable. Spending forward.

    I guess I really should have asked what would match up with the scopes capabilities from the get go. Something about hindsight and 20/20. I know it's not the greatest and had already figured TV and X-Cels overkill (no value). The question was not only for this scope but future reference. Just trying to get an idea of what's good and what's not so good. I don't mind spending money if there's value. I've spent a few more than a few bucks on guitars, amps and such. I'm an amateur at that too.

    Well, I've pestered y'all more than enough, I think I've got a good grasp on what will match up with what I have.

    Thank you again I do appreciate your patience,
    MPH

 

 

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