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Thread: What is the best eyepiece for observing jupiter

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    Default Re: What is the best eyepiece for observing jupiter



    I have that same scope and a Celestron X Cel 9mm for planetary viewing.
    That eyepiece provides a pretty sharp image and with a nice AFOV of 60* is very confortable to use.
    My seeing most of the clear nights is something like 4/5 so with the X cel eyepiece I got 166X which is just a little beyond most people would recommend for the telescope aperture is 150.
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    Default Re: What is the best eyepiece for observing jupiter

    You will get no argument from me regarding the image quality an Orthoscopic eyepiece throws up (yes, dependent on seeing conditions of the night).

    However, orthoscopics, don't forget, are like plossls in that the shorter the focal length the smaller the eye lens you look into and the shorter the eye relief. This can become a significant drawback.

    Orthoscopics are also relatively inexpensive, which makes them very attractive.

    Yet there are more contemporary designs that offer fantastic image quality, but as they also make use of newer glass types, the eye lens and eye relief is greatly improved. And some are also inexpensive. I like the TMB Planetary Type II line for this. The supposed 'clone's are the same EP made in the same factory as the 'originals'.

    One big advantage that orthoscopic eyepieces have is they use few elements. This means that with contemporary coatings they show bugger all scattering and ghost reflections that EPs that use many more elements can be susceptible to. That's another reason I like the TMB's is they also use few elements.

    There are some other newer designs than the orthoscopic one that will also perform brilliantly.

    Just giving some other options.

    Alex.
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    Default Re: What is the best eyepiece for observing jupiter

    At one point I tested several lines of EPs specifically to achieve the best views of Jupiter in my 8" SCT. Explorer Scientific 82 degree EPs got 1st place followed by Celestron X-Cel LX. Last week I had a chance to test them again on Mars and Saturn in my APO refractor and got great views again.

    I should say that I also got very sharp focus from 4mm TMB planetary in APO refractor but it kept flaring on me, so I can't recommend this one.
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