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  1. #11
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    Default Re: Telescope



    Hi Mary! I would recommend getting an orion space probe 130ST eq telescope. I have a review if you want to watch it. https://www.youtube.com/watch?v=1hh6tKCbnVY

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  3. #12
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    Default Re: Telescope

    Quote Originally Posted by Mary2 View Post
    I've contacted a retailer in Germany and am looking at perhaps one of the following, wondering your thoughts about the pros/cons of each? Thanks!
    Omegon AC 102/600 AZ-3 telescope

    Omegon Telescope N 150/750 EQ-3

    Omegon Telescope N 150/750 EQ-4

    Mary,

    You haven't really said a lot about what kind of observing interests are intended for the telescope, just a price range and that light pollution is a factor... Can you make any guesses as to what your brother might want to observe? Planets? nebulas?

    I can't really comment on the Omegon brand, never heard of it but I'm in the US. However in general two of those telescopes (the two N 150's, as well as the 130ST recommended by someone else) are equatorial mounted newtonian reflectors.

    I use an EQ mounted newtonian.. I think they have their place in the universe. That place is not for beginners.

    Getting EQ telescopes balanced, and polar aligned are significant hurdles to someone just learning to use a telescope. Once you get set up properly, you're faced with the second hurdle of the counter-intuitive motion of the telescope. EQ mounts don't move up/down left and right, but instead move in arcs that trace the paths of stars across the skies. This can make getting the scope aimed where you want it freehand a bit tricky, and takes some getting used to. For icing on the cake, when paired with a newtonian reflector, some orientations of the telescope point the eyepiece at awkward angles for viewing. You can rotate the telescope in its rings to correct this, but this risks throwing off the radial balance of the telescope with respect to the mount. How significant this is varies with how heavy the accessories attached to the scope are (eyepiece, barlow, viewfinder), but the end result is that the telescope ends up balanced in some positions, but not others..

    Not that any of this is insurmountable, but I would suggest a telescope with a simpler mount for a first telescope...



    The 102 you suggested is a fast refractor (F/6.5) on and alt-az mount... the Alt-az mount will be easier for a beginner to use, but fast refactors tend to have some of the worst chromatic aberrations. Some are bothered by the purple fringing this creates, some not as much...

    The usual beginner telescope suggestion is a dobsonian mounted reflector, and there's very good reason for this. Dobs are fairly easy to use, and the alt-azimuth movement of their mounts follows your brains normal up/down left/right view of the world. The mount itself is very simple and inexpensive, which means that most of your money goes into the telescope, not the mount. On the downside they tend to be rather large and bulky.

    I take it your brother in Berlin is probably an appartment dweller, and a dob might not suit his living conditions well...

    Can you tell us about your brothers interests, and if he has any prior telescope experience? We might be able make some better recommendations with some more information about usage/user.....
    Orion 130ST f/5 reflector, 10x50 binoculars
    5mm Zhumell z, 9mm Orion Expanse, 25/12mm Xcel-LX, 25/10mm Orion plossl,
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  5. #13
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    Default Re: Telescope

    Quote Originally Posted by Mary2 View Post
    Hi guys

    Thanks so much for your replies so far! Here is a bit more info: I'm from Melbourne (Australia) but am actually buying this for my brother who lives in Berlin (with the hope of getting one for myself down the track too!), so light pollution is a bit of an issue, however he does have access to a countryside family farm, so portability would also be great. I am wondering whether to buy one from a German retailer to save on shipping, or he is coming to visit at Easter and whether to give one to him then but getting it back on the plane may be an issue..?

    Hope that's a good bit of info to start, let me know if there's anything else you would like to hear from me.

    Thanks for the help!
    If you want portability and to stay in your budget try this out. I bought it for my brother and now Imwant one. Very portable but 6" aperture. Large enough to see some DSO. I see andromeda with no problem.

    Orion StarBlast 6i IntelliScope Reflector Telescope | Orion Telescopes
    Good luck!
    Clear skies!

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  7. #14
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    Default Re: Telescope

    Quote Originally Posted by mkettler View Post
    Mary,

    You haven't really said a lot about what kind of observing interests are intended for the telescope, just a price range and that light pollution is a factor... Can you make any guesses as to what your brother might want to observe? Planets? nebulas?

    I can't really comment on the Omegon brand, never heard of it but I'm in the US. However in general two of those telescopes (the two N 150's, as well as the 130ST recommended by someone else) are equatorial mounted newtonian reflectors.

    I use an EQ mounted newtonian.. I think they have their place in the universe. That place is not for beginners.

    Getting EQ telescopes balanced, and polar aligned are significant hurdles to someone just learning to use a telescope. Once you get set up properly, you're faced with the second hurdle of the counter-intuitive motion of the telescope. EQ mounts don't move up/down left and right, but instead move in arcs that trace the paths of stars across the skies. This can make getting the scope aimed where you want it freehand a bit tricky, and takes some getting used to. For icing on the cake, when paired with a newtonian reflector, some orientations of the telescope point the eyepiece at awkward angles for viewing. You can rotate the telescope in its rings to correct this, but this risks throwing off the radial balance of the telescope with respect to the mount. How significant this is varies with how heavy the accessories attached to the scope are (eyepiece, barlow, viewfinder), but the end result is that the telescope ends up balanced in some positions, but not others..

    Not that any of this is insurmountable, but I would suggest a telescope with a simpler mount for a first telescope...



    The 102 you suggested is a fast refractor (F/6.5) on and alt-az mount... the Alt-az mount will be easier for a beginner to use, but fast refactors tend to have some of the worst chromatic aberrations. Some are bothered by the purple fringing this creates, some not as much...

    The usual beginner telescope suggestion is a dobsonian mounted reflector, and there's very good reason for this. Dobs are fairly easy to use, and the alt-azimuth movement of their mounts follows your brains normal up/down left/right view of the world. The mount itself is very simple and inexpensive, which means that most of your money goes into the telescope, not the mount. On the downside they tend to be rather large and bulky.

    I take it your brother in Berlin is probably an appartment dweller, and a dob might not suit his living conditions well...

    Can you tell us about your brothers interests, and if he has any prior telescope experience? We might be able make some better recommendations with some more information about usage/user.....


    Thanks for this. I can't say exactly as to my brother's interests, would you need a wildly different telescope for observing planets vs nebulas? In terms of his experience, he did own a telescope a few years ago but it was quite a cheap one so he ended up getting rid of it. He has quite a bit of photography experience which I know isn't the same but I suppose has experience of that technical kind.

    I have heard the dobsonian mounted reflector is a good one but is quite big which is why I was a bit reluctant as he lives in an apartment with a smallish balcony, and I thought he would want to travel with it to the country on occasion. Is there one similar to the dobsonian but slightly more portable? What would be the rough dimensions of a standard dobsonian?

    Thanks so much for your help, it's slowly making things clearer for me!

  8. #15
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    Default Re: Telescope

    For someone living in Germany, don't buy an Orion telescope. Outside the USA you may not get the kind of support you need. I live in the USA and get good support from Orion, but Orion has had the policy (and I believe it still does) that if you did not buy the instrument directly from them they won't support you - and you cannot buy an instrument directly from them if you live in Australia or Germany. I'd recommend not going there.

    Balconies and Dobsonian telescopes don't work well together. You cannot see sufficiently close to the horizon. For this purpose you need something sitting up fairly high on a tripod. Without knowing more of his interests and mode of use I really cannot hazard a guess as to exactly what he should have.

    What I do know is that going to a star party or two will help him understand what he likes/wants/needs. Until he does that we are just guessing.

    But again, outside the USA I'm going to recommend against going with Orion. If the observing will be from a balcony I'm going to recommend against a Dobsonian-style telescope/mount.

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  9. #16
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    Default Re: Telescope

    Is your brother a fairly serious photographer? If so he might be quite finicky about the quality of the optics and might also have an interest in astrophotography.
    This could affect your choices.
    In terms planetary versus nebulae viewing the needs are different. Planets are typically small and bright so need high magnification while nebulae are typically large and dim so mostly need to be bigger to capture more light.
    Given your budget and his location, I'm wondering whether a good pair of binoculars might be a better idea for balcony use.
    I've moved to https://theskysearchers.com/index.php

 

 
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