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  1. #1
    stellatommo20's Avatar
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    Default eyepieces - how much do they matter



    Dear all,

    I am new to this forum so please forgive any errors. I shall try to keep this short..

    After a few years of stargazing with the naked eye and using stellarium frequently, I finally purchased a telescope last month. The Celestron astromaster 130eq. 130mm aperture, 650mm FL. F/5 newtonian with eq3 mount

    It came with celestron branded 10mm and 20mm eyepieces, which appear to be coated (blue tint). I also brought a cheap 2x barlow, and unbranded 'super 3.6mm' and an SR 4mm.

    My question is this - will the quality of the eyepieces dramatically affect the quality of my viewing? I am seeing some nice (well i think so anyway!!) views of jupiter with all the eye pieces, but have read alot about the cheaper eyepieces being poor quality. I am only seeing one band around jupiter.

    Also, I am thinking about buying an 8 inch newtonian with a slower F/ ratio as I understand the slower F/ gives a bigger image (i did not research fully before buying the celestron), and the 8 inch aperture will allow more light in. any reccomendations? I already have a sturdy mount form the celestron so anywhere I can just buy the scope?

    Thanks for your time,

    Thomas

  2. #2
    andyp180's Avatar
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    Default

    hi thomas and welcome to the forums,
    a great place to be.very friendly and helpful.
    ep's are an important part of the package.the ones that came
    with your scope are considered fine,although they are not the
    best.the top drawer stuff can run toy more than you paid for
    the scope itself.
    and yes,the poor quality ep's will affect the views.however,what you have
    right now will be fine for the near future.
    concentrate on using your scope for at least a year before
    you consider buying better eps.get to know the sky and more
    about the hobby.
    jupiter is only showing one band right now,however the seb(southern
    equatorial band)is believed to be making a reappearance soon.
    if you're looking for an 8" scope for the future,i'm not sure it would
    be a good idea to put it on your current tripod,the increased weight
    will be bound to overload it.
    another consideration could be a dobsonian.
    they're easier and quicker to set up and easier to use.
    they are also cheaper but give you more aperature for your
    money than any other type of scope.they're a very popular
    scope and many people here have them,me included.i have a 130
    scope too,a s/w brand,my dob out performs it hands down.

    http://www.astrobuysell.com/uk/propv...ice=&maxprice=

    look here,there can be some great bargains to be had here,unless
    you want to buy new.
    download stellarium if you don't already have it,it's free software
    and will be a massive help to helping you learn and understand the skies.
    clear skies,
    andy
    p.s:you will find that the 3.6mm and 4mm ep's you got are going to be too high
    powered for the scope you have.scopes have an upper limit to how much mag
    they can feasibly use,and thet are right at the top end.the highest mag i use with
    my 130 and still retain "decent" views is 9mm,although i can push it to 7mm in
    better conditions
    Last edited by andyp180; 11-11-2010 at 02:55 PM. Reason: add on

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    andy

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    revelation 20X80 bino's,camlink tp-2500 camera/bino tripod.
    a few bits and pieces and a major addiction
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  4. #3
    samgray1's Avatar
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    Default

    What Andy said.
    Name: Sam
    Equipment:
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    12” Collapsible Dob w/Telrad, Explore Scientific 30mm 82*, and 20mm, 14mm, & 9mm 100* EPs, Tele Vue 4X Powermate & Paracorr T2, 2" Lumicon UHC and ND13 (
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    ) Filters, 2" Astronomik OIII filter, dew heater system, and Nikon Action 7x50 EX Extreme ATB 6.4* binoculars & Celestron 15x70 binoculars.

    I'm enjoying learning the sky by star hopping; just charts, my binoculars, and my Dob!

  5. #4
    Dublin sky watch's Avatar
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    Default

    Hello and welcome to the forums Thomas.
    This might help as well....Eyepiece upgrade. What to expect? Where to begin?
    Declan.
    Celestron 8"Edge HD SCT.

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  7. #5
    stellatommo20's Avatar
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    Default

    thanks for the replies. i guess il stick with what ive got atm.

    to kind of piggy back this thread... im buying a celestron neximager ccd camera, is a motor drive essential?

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    Default

    Hi Stellatommo20!

    Welcome to the forum.

    If your planning on doing any imaging a motor drive is necessary. You might be able to capture some images of the moon without a drive but the problem will be getting the moon to stay in the field for view long enough to turn around an put the "capture" button on the computer. If you move the scope so you are a little ahead of the spot you want to image and then click capture as the object passes that might work. But it will be very difficult. If you have a camera now you might want to try just doing some imaging directly from the eyepiece. The results can be pretty amazing.
    Gordon
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    In astronomy, a general rule of thumb is, If you don't know specifically what you need, then you don't need to buy it. Observe with the equipment you have until you really know what your next upgrade should be, and why. You tend to make fewer mistakes with your astro cash this way.

    Those ep's that came with your kit may not be the best you can buy, but understand they aren't junk eyepieces either. Take your time and enjoy the view. That's what it is all about.

    Jim
    Celestron C9.25. Atlas EQG mount. Canon 500D unmodded, Celestron ST80 guide scope, SSAG, Meade 6.3 FR, Thousand Oaks dew control with Dewnot straps. Zhumell 8/24mm Zoom, 2"Gso Superview 42mm, Meade 2"QX wide angle 30MM, Meade 1.25 EP and filter set. Tasco 10x50 Zhumell 20x80 bino and a few other odds and ends.
    Now where did I put that clear sky button!

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    Yes, a motor drive is essential for astrophotography. It is also nice for visual, especially at high magnifications. As Andy said, your mount is pretty much maxed out with that scope, especially if you add a camera and such.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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