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Thread: How'd I do on these choices for my ETX-80?

  1. #21
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    Default Re: How'd I do on these choices for my ETX-80?



    Thanks for all the help.
    I may keep the X-CEL Barlow to see if I can tell the difference between it and the 2 element GSO.
    I know I probably won't with this scope.
    Ray
    Meade ETX-80
    Celestron Oceana 7x50
    Zeiss Marine 7x50 B/GA

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    Default Re: How'd I do on these choices for my ETX-80?

    The X-Cel Barlow is quite good.

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  3. #23
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    Default Re: How'd I do on these choices for my ETX-80?

    I am coming late to the discussion, but you pick good quality EPs. I have Luminos 15mm and it works nicely in fast achro scopes like yours.

    I don't have personal experience with XWA, but Meade UWA 5.5mm is good EP.

    X-Cel LX Barlow is not bad, but you have a good coverage with your EPs, so I would return it for now.

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    Default Re: How'd I do on these choices for my ETX-80?

    I was amazed at the size and weight of the Luminos once I had it here in hand. Will my Etx-80 mount even hold this? It weighs about 500g!
    Ray
    Meade ETX-80
    Celestron Oceana 7x50
    Zeiss Marine 7x50 B/GA

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    Default Re: How'd I do on these choices for my ETX-80?

    Quote Originally Posted by xraygun View Post
    I was amazed at the size and weight of the Luminos once I had it here in hand. Will my Etx-80 mount even hold this? It weighs about 500g!
    Yes, it worked in my 90mm refractor, no problem.

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    Default Re: How'd I do on these choices for my ETX-80?

    I gave the Meade 5000 and Luminos a brief try last night on the cloudy moon.
    Wow.
    Big difference with the field of view over the Plossi ones that came with the scope.
    The Luminos has a very nice twist eye relief feature.

    Fingers crossed on some clear skies on my upcoming Long Beach, WA Razor clamming trip.
    Doesn't look good though.

    Esthetics do matter to me for whatever reason. I like these pieces.

    I will probably order up that ES 24mm wide field as recommended shortly.

    And the barlow with the 1.5 option.

    The shakiness of the focus mechanism is the only letdown on the scope so far.
    I started a thread about adapting the 1244 electronic focuser, which I see has been done before.

    Cheers,
    Ray
    Gabby76 likes this.
    Ray
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    Celestron Oceana 7x50
    Zeiss Marine 7x50 B/GA

  7. #27
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    Default Re: How'd I do on these choices for my ETX-80?

    I have owned several of the Luminos focal lengths and looked through all of them courtesy of some friends who had the models that I never bought. They are generally cheaper than the ES or Meade 82 degree offerings, so an attractive price might argue in their favor, but the performance even in the slower scopes is generally slightly to noticeably inferior. The edges deteriorate quickly in anything faster than f6. They show more flare and glare on bright targets and you will see the edge of field brighten and wash out faint targets that are near any brighter objects. I always joked that you didn't need a finder with the longer Luminos focal lengths because you just used EOFB to find things by "going towards the light". Their big plus is longer eye relief with less blackout issues than the Meades, Es's, and even Naglers and in dark areas of sky they usually had greater throughput than the other 82 degree eyepieces.

    If you are doing fine with your astigmatism when using these eyepieces, great - but do evaluate them critically once you get past the novelty of their wide fields. I have found the that the eye relief WHILE VIEWING THE WHOLE FIELD requires you to move in tighter than the quoted distances. These eyepieces allow you to focus and view clearly at the stated eyerelief but you do not see the fieldstops. Blackouts can also be a problem for some viewers when you get close enough to clearly view the complete field. Eyeplacement is a very subjective topic, so if you are not having any problems, don't worry about it. Just keep in mind that most users are so bowled over by their first wide field views that they sometimes take a little time to get over that sensation and begin to critically evaluate all the other important performance traits in these eyepieces.


    I would suggest giving the Luminos a critical evaluation, and return it if any of the above cited problems are seen. Keep it if the price is right and the views please you. I agree with the other poster's feedback on the x-cell and Meade ep's and my experience with these variable polarizers is that they seem about the same, probably due to the fact that they all come from the same Chinese factories. Examine it carefully for any flaws because quality control issues is the only significant problem that I have encountered with the lower priced filters.
    Last edited by Trombatissimo; 11-01-2017 at 06:35 PM.

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  8. #28
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    Default Re: How'd I do on these choices for my ETX-80?

    Quote Originally Posted by Trombatissimo View Post
    I have owned several of the Luminos focal lengths and looked through all of them courtesy of some friends who had the models that I never bought. They are generally cheaper than the ES or Meade 82 degree offerings, so an attractive price might argue in their favor, but the performance even in the slower scopes is generally slightly to noticeably inferior. The edges deteriorate quickly in anything faster than f6. They show more flare and glare on bright targets and you will see the edge of field brighten and wash out faint targets that are near any brighter objects. I always joked that you didn't need a finder with the longer Luminos focal lengths because you just used EOFB to find things by "going towards the light". Their big plus is longer eye relief with less blackout issues than the Meades, Es's, and even Naglers and in dark areas of sky they usually had greater throughput than the other 82 degree eyepieces.

    I would suggest giving the Luminos a critical evaluation, and return it if any of the above cited problems are seen. Keep it if the price is right and the views please you. I agree with the other poster's feedback on the x-cell and Meade ep's and my experience with these variable polarizers is that they seem about the same, probably due to the fact that they all come from the same Chinese factories. Examine it carefully for any flaws because quality control issues is the only significant problem that I have encountered with the lower priced filters.
    Great info. Especially since I don't know how to evaluate bupkiss when it comes to this stuff.
    Ray
    Meade ETX-80
    Celestron Oceana 7x50
    Zeiss Marine 7x50 B/GA

 

 
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