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  1. #1
    Martybc3's Avatar
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    Default Orion Xt8 Eyepiece question



    Hey guys i bought my first telescope about 1 month ago "Orion Xt8". I only have the included eyepiece which is a 25mm plossel. I am looking into buying a TeleVue 11mm, and a 40mm. My main question is the 2 eyepieces together equal about 220$ when I can get a Lens kit for 160$. Are these Eyepieces really worth it? Particular the 40mm it retails around 150$, would i be able to notice anymore detail when observing galaxies then i would with my 25mm? Is the 11mm good for viewing Saturn and Jupiter? And one last question does elements make a difference, or multicoating vs Fully Coated? Thanks for any input.

  2. #2
    Bob327's Avatar
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    Default

    Your dob should have a focal length of about 1200 mm which means that your 11 mm eyepiece will give you about 110x in your telescope...To me that is below what I normally use to view planets with...(I use between 140 and 180x) my skies and seeing conditions never allow me to go much past 180x except on the moon.......

    Televue make darn good eyepieces...and I even own a few along with a few Pentax eyepieces BUT as you discovered you pay for the good stuff...

    Personally I think you would be better off buying the Kit... my reasons are

    1. your scope has a focal length of close to f/6 so it does not require a well corrected and expensive eyepiice to give you great views
    2. The quality of eyepieces in most kits are definately not even close to what a Televue eyepiece would be BUT they are definitely not even close to being called junk either..
    3. I like these kits ..."AS AN EDUCATIONAL TOOL" ..and a CHEAP education at that ... You will learn what an eyepiece can do your you, what a barlow can do for you and what a Moon filter adds to your enjoyment of the moon etc..Plus the case (at least a Celestron case is a keeper that can be used until you need a larger case... the colored filters however, are a waste .,,but who cares when if your break down the price of the individual optical pieces c you will be spending 15 or so bucks each...

    That said...I bet ...in one year... you will have replaced... all of the individual eyepieces But who cares if you find yourself viewing most of your time with say a 15 mm eyepiece then you can go out and replace that individual eyepiece with a better one that has more eye relief, or wider FOV etc ..

    Use the kit to learn what magnifications work best for YOU for what you are interested in viewing...

    BTW these kits can be purchased used for about 100 bucks tops...

    Bob G.
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  4. #3
    Martybc3's Avatar
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    Default

    Thanks for the feeback!! Yea the kit seemed like a good deal that was my main concern. I will probably end up buying a kit since I'm newbie, down the road like you said I will probably end up replacing them.

  5. #4
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    Default

    just something else to cloud your decision making here...You can get a decent zoom lens for the money you are going to spend on a kit. I have an XT8 just like you and a low end zoom, a Zhumell, and I use it exclusively. It is much easier to give a slight twist to change magnification, keeping the object it my FOV, than it is to swap out EPs and have to relocate the target. You will get alot of differing opinions on zoom EPs and its one of those love'm or hate'm situations. I love mine and it works well with my XT8.
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  7. #5
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    Default

    Instead of the 40mm plossl, consider a 32mm plossl. It will give the same maximum field of view in a 1.25 inch barrel, but at a higher magnification. Most 32mm plossls on the market are going to give you good views. I see the Televue 32mm sell used for about $75.
    The 11mm plossl is going to have very little eyerelief, something to consider if you have to wear glasses (it will not be usable with glasses). In my 8 inch dob I use 9mm a lot. You can get a decent 9mm Extra Wide Angle from Agena Astro, for less than $40. It has a 66 degree field of view with good eyerelief. It is not perfect at the edges and does not do so well on the moon, but it is remarkably good for DSO.
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  9. #6
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    Default

    I agree with Neal and Bob, the kit or the zoom would be a great deal. I have a Hyperion Zoom and a Orion Q70 32MM for my XT8. I've been running this set up for almost a year now and do not have any plans for any new Eyepieces, it really serves my viewing needs and with a good barlow the Hyperion performs really well.
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  10. #7
    Martybc3's Avatar
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    Default

    How is the Quality on Zoom Eyepieces? Would there be a noticeable decrease in visual quality? If I got a Zoom Eyepiece I would probably spend around 100-130$ anyone know any good brand for zoom eye's. Something doesnt seem right why are these so cheap compared to others? Most are around 50-200$ for most I found online. Zoom Eye or the Kit seem like the best way since I just started not to long ago

  11. #8
    Martybc3's Avatar
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    Really thinking about saving up and getting the Baader Hyperion Zoom. There is however mixed reviews on its FOV and its optics. But I really think this is good eyepiece for a beginner like myself.

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    I used to have two Orion Expanses (15MM and 9MM). I bought the Hyperion Zoom and have never looked back. I love the views so much, I sold the other two eyepieces. With a barlow, it really is all I ever need.
    Tim D
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