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Trying to figure out what I was looking at.
Last post 06-10-2008 11:03 PM by HiItsNino. 4 replies.
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  • 06-09-2008 12:22 AM

    Trying to figure out what I was looking at.

    Hello.. I am relatively new to astronomy, and have seen the moon, satern, jupiter, etc.  Lately I've been trying to find some new objects to study, so tonight at 11:00pm (from Washington, DC) I was looking at the moon.  Then I noticed this little spec at 1:00 (were the moon a clock).  I know it wasn't Satern, and its definately not observable from DC to the naked eye.  Does anyone know what I was looking at?

     Additionally, I was exploring north - east when I came across a really interesting star, galexy - something.  Basicly, it seemed to change color constantly, lots of green-red-yellow-blue.  It was very cool. I used my finder and it said it was Epsilon Peg, but I am not sure I believe it because I tried again after a while and it said it was the satern nebula.  Its definately not the satern nebula.  I've done some searches on Epsilon Peg but didn't really find anything.  I still need to learn the differance between named stars, named objects, etc.  I used "named object" to identify this thing once I found it.  Anyway, I found whatever I was looking at to be really interesting and would like to learn more about it, if anyone has any idea what I was viewing.

    I was using a Celestron NextStar 8SE, with a 25mm eyepiece if that info helps

     Thanks

  • 06-09-2008 12:37 AM In reply to

    Re: Trying to figure out what I was looking at.

    Hi HiltsNino!

    Welcome to the forums!

    The Moon is near...Saturn and Regulus tonight, not sure how you were clocking the Moon (the star dome program should be able to show you a representation of the sky for tonight.

    The star that you were looking at that had all the colors, it might have just been some atmospheric disturbance that was making the star dance.  I tried looking at Jupiter last night and the edge was shimmery (like asphalt on a hot day).  You can see pretty stuff, but it is just a trick of the atmosphere.  Galaxies and nebulas look kind of fuzzy (and they are mostly black and white to the naked eye).  If it was a point of light it was a star, if it was a big fuzz ball it was something else (does that even help?)

    Good luck with your observing!

    Tina

    Signature
    In science there is only physics; all the rest is stamp collecting. - Ernest Rutherford
  • 06-10-2008 12:09 AM In reply to

    Re: Trying to figure out what I was looking at.

    Thanks, but I don't think it was Regalus, it was not visible to the naked eye and (appeared) much closer to the moon.  Maybe chort?  but I have a hard time with the star charts, they seem dyslexic to me (or maybe I am).

     So a normal star will change color quickly due to the atmosphere.  How come on these nights all the stars in the general area of disturbance do not do the same?  Also, does the color of a star determine what kind of sun it has?  For example, I imagine from far away our sun would appear gold, and a dying sun would appear l.e.d. - white ?  Sorry for the questions, but I'm trying to figure out what kind of facts can learn from observing.  I'm really perplexed at how complicated the universe is and trying to tie that to what I believe is possible in the universe.  Its disappointing to learn there are mostly gas giants out there for planets, so how many sun like stars are there- and of those stars do suns most like our sun have more solid like planets?  Can I tell from any kind of detail like how fast it twinkles, or how long the arms of the light stretch from the center (if that makes any sense at all).

  • 06-10-2008 01:32 PM In reply to

    Re: Trying to figure out what I was looking at.

    HiltsNino,

    Good questions. 

    We can tell a lot about a star from the color of the star, as well as studying the spectra obtained from the star.  A blue/white star is usually a BIG star, a yellow star is kind of like ours, red stars can be Red Giants (also really big, but different from the blue/white big)...

    As far as the gas giant planets, I think it is more likely that they are the easiest to detect, so that is why we have found more gas giants.  There might be more of those than terrestrial planets, but we just don't know yet. 

    Let me try to answer all your questions before I go off on a tangent!

     Star charts are kind of dyslexic, they are printed so that you hold them up to the sky to see the constellations (line south up with south - holding the chart so south is facing down when you are facing south)....then west will be west and east will be east.  You will get used to it, just need a little while to become acclimated.

    HiItsNino:

    How come on these nights all the stars in the general area of disturbance do not do the same? 

    The stars are all different, and the atmosphere is forever changing....no way to tell really, might be something to do with the wavelength of the star light and how it is absorbed by the atmosphere??? 

    Also, does the color of a star determine what kind of sun it has? 

    As I mentioned earlier the color of the star (without the atmospheric disturbance, that is just the effect here on Earth) will tell you a lot, size, surface temperature, etc... 

    For example, I imagine from far away our sun would appear gold, and a dying sun would appear l.e.d. - white ? 

    Dying stars are Red - neat huh?  You can search for the HR diagram and the life cycle of a star, (generalizing here...) they go from protostar, to star, to red giant, to white dwarf (some of them explode though, the bigger they are the more likely they are to supernova) 

    Its disappointing to learn there are mostly gas giants out there for planets, so how many sun like stars are there- and of those stars do suns most like our sun have more solid like planets? 

    We have an average star, so there are a fair number of them.  Like I said before, I think we just haven't learned how to find terrestrial planets yet.  We discover planets using secondary methods, not direct methods.  We can measure the wobble of a star and know that there is something orbiting it and then calculate the mass of that something....cool huh?

    Can I tell from any kind of detail like how fast it twinkles, or how long the arms of the light stretch from the center (if that makes any sense at all).

    The atmosphere's twinkle has nothing to do with the star, but some stars are variable and will change brightness over time.  Those variable stars are usually used to determine distances to far away galaxies because we can measure the time it takes to change brightness and classify the star as a certain type of variable star.  Then we can calculate the distance based on the brightness. 

    Hope that didn't confuse you more.  Let me know if you have more questions!

    Tina

    Signature
    In science there is only physics; all the rest is stamp collecting. - Ernest Rutherford
  • 06-10-2008 11:03 PM In reply to

    Re: Trying to figure out what I was looking at.

    Thanks for your thoughts on this!  I really appreciate it.  Now I'll know a little something as I star gaze...

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