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  1. #1
    madperk's Avatar
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    Default Celestron Ultima Duo or tele vue line of ep that are compatible with the dioptrx



    i have been doing a little bit of research on eyepieces since the clouds rolled in last week. I bought an EP starter kit with my nexstar 6se which gave me a nice selection to try out. i really cant compare them to a higher quality ep but the research is telling me that these are entry level ep's and i could get better visuals by spending a little extra cash on a new ep. the barrow that came with the kit seems to be a little below par as well. i am thinking that i could pick up two or maybe three ep's of better quality with a good quality barrow to use when i have good seeing.

    i landed on this line for a number of reasons

    vision. i have an astigmatism which is very pronounced in one eye and minor in the other. with a 20mm eye relief i could leave my glasses on and use my dominate eye(with the heavy astigmatism).

    i have a ccd planetary cam that would screw into the eye piece. not a big deal but it would give me a little extra mag.

    since it works with both 2 and 1 1/4 if i decide to 'go big or go home' and buy a scope that can utilize a 2 in ep in the future i would already have a decent eyepiece or two.


    the other alternative would be to look at the tele vue line of lenses. these are more expensive but i could get their dioptrx astigmatism corrective lenses.

    i am probably going with the celestron with the lower cost entry point. worst case ... i could just sell it down the road to cover the cost of the corrective lense.

    i know there are alot of options out there. at 45 wearing glasses with bifocals higher eye relief and glasses or corrective ep and reading glasses could be alot more important a few years down the road.

    anyone using the dioptrx from televue or ultima duo?
    Telescope: Celestron NexStar 6SE, Explore Scientific ED-102 APO, Explorer Scientific ED-80 APO Auto-Guider: Orion Magnificent Mini Deluxe AutoGuider
    Mount: CGEM Camera: Canon T3 Eyepieces: Wide Range of Plossl's, 2x Barrow
    SoftwarePHD2,BackyardEOS, Deep Sky Stacker or Sequator, Lightroom CC desktop, Photoshop, Astro Pixel Processor

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  2. #2
    Bob327's Avatar
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    Default Re: Celestron Ultima Duo or tele vue line of ep that are compatible with the dioptrx

    The internal Baffle inside the 6Se measures one inch...so I question the purchase of a 2 inch diagonal and eyepieces...
    Sure you can go that route but you will not gain anything ..barely be noticeable...

    Sure Televue eyepieces are very very Good ..But again the difference is small BUT usually noticeable especially along the edges of the FOV
    Many other brands are also very good...and not one company makes the best individual eyepiece in each focal length....So I highly suggest that you compare several brands in your scope and buy the one you think gives you the best views at the most reasonable price..

    I do have several Televue eyepieces But I also have several Pentax and even a one from Orion and one GSO all of them give me the best views at the magnifications I want I much prefer the Pentax over Televue with high power BUT conversely I find the Televue lower Power to be better (for my old eyes) then the low power Pentax ... The one orion and one GSo just plain work too darn good to even think about replacing them...

    Bob G
    CPC1100 housed in a slotted domed observatory (Exploradome) 4 and 5 inch refractors for use from the lawn, a 8" Sct (NS 8i) for star parties...
    I Hate the winter so I use heated Motorcycle clothing to stay warm while observing in winter
    Retired, also have 2 other hobbies
    1. tinker with older Corvettes (6 in garage)
    2. make a heck of a lot of sawdust in my wood shop.

  3. #3
    madperk's Avatar
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    Default

    I went ahead and sprung for the ultima duo 21mm 68 degree fov EP. I of course brought the clouds in for the next ten days but I did have a hazy hour with the conjunction last night. Quality aside, lining up both planets in the EP at the same time was fantastic.

 

 

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