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  1. #1
    davred's Avatar
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    Default Zoom, pros and cons



    Could someone explain to a bear of little brains the advantages and disadvantages of zoom eyepieces over fixed ones.

  2. #2
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    Default

    Hello.,.,the advantage of a zoom is that you do not have to keep changing EPs. to get to the mag. that is best for your target.,.also,.. it is like having many EPs. in one,,.the down side to zooms is that they tend to have a narrow FOV...,and unless you get one of a higher quality your view will not be as good as a fixed EP.,.I have a Baader Hyperion 8-24mm zoom and I love it.,.the FOV is the best of any zoom.,.,68*@8mm,.,50*@24mm.,,50* is what most of your standerd plossl EPs.offer.,.this zoom costs $215.,.but it is very high quality,.,and can by used at any "mm setting between 8+24" so it like having many many EPs in one,.,zooms have had a bad rap over the years.,but recently they have been getting made better.,.it is the EP that I use the most..,.but it is also the only "higher quality" EP that I own,.,and I feel that I do not have a need for any others because of its quality.,,.hope this helps.,.,O+O

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  4. #3
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    Default

    Yup , I have to agree with CD David. I have the same Zoom.

    Have a look here Baader Planetarium - Baader Hyperion Zoom Eyepiece

    I have used this site a good few times , good people to deal with. I got mine there .
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  6. #4
    davred's Avatar
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    Default

    Thanks for the info. I was going on the bad rep they have and also it seemed to me that there must be some sort of trade off in getting the zoom.
    I suppose its like most things, you get what you pay for.
    51° 24' 52"N
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    Generic 104mm catadioptric Newt, EQ mount, ccd imaging.
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    ? x 50 bins.
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    My Celestron zoom is my most used eyepiece. I wish I had gone for the Baader Hyperion, but I am well satisfied with the performance the Celestron delivers. I always recommend a zoom when asked about eyepiece sets.
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    Default

    This Hyperion click-stop will probably be my first eyepiece purchase. I have 3 fixed eyepieces which came with the new scope.
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    Default

    They certainly seem to be very popular. Most of the suppliers show them as being out of stock.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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    Default

    Just ordered the Sky Watcher 7mm to 21mm zoom eyepiece. Will see how I get on with it.

    I dont do a lot of direct viewing, mainly ccd imaging ,due to disability but when I do I like to have a choice of eyepieces. So this might do.
    51° 24' 52"N
    0° 4' 11"W
    90mm mak Cas Merlin driven mount, Celestron Neximage ccd imaging.
    Generic 104mm catadioptric Newt, EQ mount, ccd imaging.
    70mm "toy" refractor, alt az mount.
    ? x 50 bins.
    All the usual bits and pieces.

  12. #9
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    Default

    I too am very pleased with my Hyperion Zoom. Most nights it is all I take out.

    I love being able to find the ideal magnification for the nights viewing conditions without having to swap back and forth among different eyepieces. Much less refocusing as you change as well.

  13. #10
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    Default

    Hello...

    I have a TeleVue 8-24mm click-stop Zoom that I never use, because compared to my 80-82 degree Naglers and Meade Ultrawides, it's like looking through a soda straw!

    Therefore, I want a 2" zoom with wide FOV's at all focal lengths. A $200-$250 price is OK.

    What's your recommendation?

    Thanks...
    HAL

 

 
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