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  1. #1
    Planet Reach's Avatar
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    Default Looking for new EP .



    I have an Orion xt8i and I'm looking to add two new EP. Orion is having a good deal now and I figured it would be a great time to purchase. I current have a standard 25mm and 10mm i also have a 2x barlow and looking into getting a 17mm Orion Sirius Plossl Telescope Eyepiece and the 32mm Orion Sirius Plossl Telescope Eyepiece

    Im sure there are better EP however the price is right where I want to stay.

    What do you guys think?

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  2. #2
    JuanM's Avatar
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    Default

    If you could stretch your budget a little bit, I would go for the HighLight Plossl series. They are fully multi-coated and must provide slightly better contrast and light transmission.
    Price difference is not massive either.

    My only question is whether to choose the 12.5mm instead of the 17mm, as the 32mm with the Barlow will mean a 16mm... Maybe too close each other ?


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    : Orion XT8" Intelliscope 203/1200 f/5.9.
    Binos: Celestron SkyMaster 15x70. EPs(1.25"): Baader Hyperion 31mm aspheric, Baader Hyperion 8-24mm Mark III zoom, Orion SP 25&10mm, GSO 2.5x APO Barlow. Filters: Lumicon UHC, Orion SkyGlow broadband, variable polarizer 1-40%, colors #15, #25, #58, #80.

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  4. #3
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    Default

    Thanks Juan, I think I can manage that, I was going to purchase that originally.
    I am definitely open for suggestions. Would you not recommend going lower then 12.5? Would that be too much mag?

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  5. #4
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    Default

    No, sorry. I didn't explain myself.

    What I meant was that a 17mm will give you 70.5x and the Barlow with the 32mm will give 75x. Too close each other in my opinion. However, a 12.5 will give 96x, and 192x when barlowed. So if you get 32, 25, 12.5 and 10mm plus the barlow, your range looks a bit more balanced to me, i.e. 37.5x, 48x, 75x, 96x, 120x, 192x and 240x.

    The good thing about not going lower than your 10mm is that shorter plossl EPs will have very small eye relief, but using a 12.5mm with the barlow will be equivalent to a 6.3mm but still preserving the eye relief of the 12.5

    Hope it helps !


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    : Orion XT8" Intelliscope 203/1200 f/5.9.
    Binos: Celestron SkyMaster 15x70. EPs(1.25"): Baader Hyperion 31mm aspheric, Baader Hyperion 8-24mm Mark III zoom, Orion SP 25&10mm, GSO 2.5x APO Barlow. Filters: Lumicon UHC, Orion SkyGlow broadband, variable polarizer 1-40%, colors #15, #25, #58, #80.

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  7. #5
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    Default

    You're the man Juan!

    Thanks for all the advises you have giving me since purchasing my xt8i, I really appreciate it.

    I ordered the 32 and the 12.5 EP you recommended .

    Thanks again

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  9. #6
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    Default

    Thanks ! Let us know how they go !


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    : Orion XT8" Intelliscope 203/1200 f/5.9.
    Binos: Celestron SkyMaster 15x70. EPs(1.25"): Baader Hyperion 31mm aspheric, Baader Hyperion 8-24mm Mark III zoom, Orion SP 25&10mm, GSO 2.5x APO Barlow. Filters: Lumicon UHC, Orion SkyGlow broadband, variable polarizer 1-40%, colors #15, #25, #58, #80.

  10. #7
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    Default

    I recently purchased the 32 mm Highlight Plossl from Orion and when I first got it? I thought it was the best thing since sliced bread as compared to the standard 20 mm my Orion came with.
    Then I spent some time with it, comparing the standard 20 to the 32 mm Highlight Plossl.
    I have found that the 32 does give you a slightly larger view.
    Dont notice any difference in clarity, might be a brighter, but thats hard to tell.
    What I did notice is that the Highlight Plossl is very sensitive to eyeball to lens distance and position as compared to the standard ep which is more generous.
    I find this aggravating and find myself using the standard 20 mm ep instead.
    Hopefully, your results vary from mine.
    Now you do have a larger tele then I do, that might make the all the difference ?
    Or, I might be just old and fussy.

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