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Thread: Bright Star in the East Sky @ 21:00 05 Jan 2014

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    Hobbit Peder's Avatar
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    Default Bright Star in the East Sky @ 21:00 05 Jan 2014

    I see there is a bright star in the sky?

    Does anyone know what star/planet it is?

    i see here it says its jupiter but that is a UK site.

    Maybe i am just seeing things :P
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    Grandmaster XennoX's Avatar
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    Stellarium confirms it is Jupiter.
    The most painful lesson to learn is that of humility.

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    Take a photo dammit.

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    I am not currently in Pretoria and it is overcast where I find myself in Johannesburg but I suspect that the object you are seeing is Jupiter as Jupiter is currently the brightest star-like object in our skies.

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    Super Grandmaster Zenbaas's Avatar
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    Quote Originally Posted by skimread View Post
    Take a photo dammit.
    +1 Pics or GTFO.
    Quote Originally Posted by Albereth View Post
    I think a true test of humanity is if you can see a dog as your best friend rather than as lunch.

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    Super Grandmaster Compton_effect's Avatar
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    Yep. Its the big guy.
    next time - http://www.heavens-above.com/
    Ethics, morals, scruples and a sense of rhythm. I have none of them, and only miss one.

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    Grandmaster XennoX's Avatar
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    Quote Originally Posted by skimread View Post
    Take a photo dammit.
    You're not going to see much. Just a solid white doubt about 0.5 mm across. A 60 mm telescope would be able to let you see Jupiter and the 4 Galilean moons. You'd need a 120 mm telescope with quite a large magnification to see any further detail.
    Last edited by XennoX; 05-01-2014 at 10:29 PM. Reason: Inches make no sense - corrected to millimetres.
    The most painful lesson to learn is that of humility.

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    Quote Originally Posted by XennoX View Post
    You'd need a 10" telescope with quite a large magnification to see any further detail.
    How much magnification do you think is necessary?

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    Quote Originally Posted by Humberto View Post
    How much magnification do you think is necessary?
    I'm no expert but with my 60 mm telescope and a 20 mm eye piece I can make out Jupiter and the 4 Galilean moons but nothing else. If I pop on my barlow lens which is a 2x magnification lens with my 8 mm I get a slightly magnified picture which has a magnification power of 305x but it gets fuzzy then.

    On the larger telescopes, you should be able to magnify even higher. This link explains magnification quite well. Basing a guess off of what Stellarium is giving me you would need to achieve a FOV of 0.412 to see any meaningful detail with Jupiter. That is going to be incredibly difficult with regular telescopes.
    Last edited by XennoX; 05-01-2014 at 10:41 PM.
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    The aliens have come to fetch Mugabe...

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    Quote Originally Posted by XennoX View Post
    I'm no expert but with my 60 mm telescope and a 20 mm eye piece I can make out Jupiter and the 4 Galilean moons but nothing else. If I pop on my barlow lens which is a 2x magnification lens with my 8 mm I get a slightly magnified picture which has a magnification power of 305x but it gets fuzzy then.

    On the larger telescopes, you should be able to magnify even higher. This link explains magnification quite well. Basing a guess off of what Stellarium is giving me you would need to achieve a FOV of 0.412 to see any meaningful detail with Jupiter. That is going to be incredibly difficult with regular telescopes.
    Wow. Does your telescope have a focal length of 1200 mm?

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    Grandmaster XennoX's Avatar
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    Quote Originally Posted by Humberto View Post
    Wow. Does your telescope have a focal length of 1200 mm?
    Nope, 700 mm.
    The most painful lesson to learn is that of humility.

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    Thanks Guys. Didn't even bother with a photo cause it usually doesn't work :P
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    Quote Originally Posted by XennoX View Post
    Nope, 700 mm.
    I thought your telescope had a focal length of 1200 mm from using the formula that magnification = focal length / eyepiece length.

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    Grandmaster XennoX's Avatar
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    Quote Originally Posted by Humberto View Post
    I thought your telescope had a focal length of 1200 mm from using the formula that magnification = focal length / eyepiece length.
    Oh I was talking about the magnification of the eyepiece coupled with a Barlow lens. Its magnification is 305x.
    The most painful lesson to learn is that of humility.

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