Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
If we do not hit our goal we will be forced to close the site.

Current status: https://keepboardsalive.com/

Annual subs are best for most impact. If you are still undecided on going Ad Free - you can also donate using the Paypal Donate option. All contribution helps. Thank you.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

What are those 2 stars !

2»

Comments

  • Closed Accounts Posts: 3,772 ✭✭✭Cú Giobach


    gkell2 wrote: »
    Most observers know political spin when they see it besides we are not only standing on a moving Earth as it now overtakes Mars,we are also rotating which accounts for the daily return of the Sun so both motions are bound together without having to leave the planet or imagine what things look like from the Sun.Once a person comes to understand the basics of planetary dynamics through all the tools we have today,they are not going to fall for something that is false and especially Newton's unacceptable view which started these modeling and predictions agendas that are now running amok today.

    Observers must be clear that the older astronomers used the background stars to gauge not only retrograde motion but the periods for each planet and they organized the structure of the solar system this way -

    "Of all things visible, the highest is the heaven of the fixed stars. This, I see, is doubted by nobody. But the ancient philosophers wanted to arrange the planets in accordance with the duration of the revolutions. Their principle assumes that of objects moving equally fast, those farther away seem to travel more slowly, as is proved in Euclid's Optics. The moon revolves in the shortest period of time because, in their opinion, it runs on the smallest circle as the nearest to the earth. The highest planet, on the other hand, is Saturn, which completes the biggest circuit in the longest time. Below it is Jupiter, followed by Mars.
    With regard to Venus and Mercury, however, differences of opinion are found. For, these planets do not pass through every elongation from the sun, as the other planets do. Hence Venus and Mercury are located above the sun by some authorities, like Plato's Timaeus, but below the sun by others, like Ptolemy [Syntaxis, IX, 1] and many of the modems. Al-Bitruji places Venus above the sun, and Mercury below it. " Copernicus

    The ancients had the Sun moving between Venus and Mars as the 365 days it took to complete a year falls between the orbital period of 687 days for Mars and 225 days for Venus.In short there is a whole line of reasoning behind the orbital motion of the Earth that is being shortcircuited by followers of Newton who overreached with their conclusions to suit themselves.A short detour to the online orrery really helps to put observations in place,the use of the background stars and the period it takes a planet to return to the same grouping of stars -

    http://apod.nasa.gov/apod/ap011220.html


    To cut a long and very tangled story short,the followers of Newton introduced a rotating celestial sphere or 'right ascension' observing as it is called which completely obliterates appreciation of the motion of planets against the distant stars and to each other as they move around the Sun.The online orrery is in competition with the Ra/Dec celestial sphere which looks like this -

    http://www.youtube.com/watch?v=hYqh72i2mhg

    It is really bad business but there is no need to swamp the reader who is unfamiliar with the issues with things they don't need but at least they can say with 100% certainty that those who follow Newton get it wrong by using all the tools we have today to affirm it.If you wish to remain with political spin for Newton's sake then good for you but effectively that is all it will be.
    You talk total BS. Bye.


  • Closed Accounts Posts: 147 ✭✭gkell2


    You talk total BS. Bye.

    It is great to see dads take their kids outside to identify stars and planets and maybe even try their hand at the challenging exercise of organizing the motions of the planets into their respective orbits,with today's tools it genuinely is fun and gives a satisfaction that will last as long as a person lives.

    The main point here is that the astronomy of the solar system is perfectly understandable,needs no mathematics other than the language of geometry and even this is supplied by online orrerys and imaging so the rest is common sense.


  • Registered Users, Registered Users 2 Posts: 610 ✭✭✭muckish


    6989363543_929425f36f_z.jpg

    Venus & Jupiter over Mulroy Bay, Co.Donegal. 16th March, 2012.


  • Posts: 6,321 ✭✭✭ [Deleted User]


    muckish wrote: »
    6989363543_929425f36f_z.jpg

    Venus & Jupiter over Mulroy Bay, Co.Donegal. 16th March, 2012.

    greta shot Muckish, you Donegalians get all the luck :)


  • Registered Users, Registered Users 2 Posts: 40 Biggies


    The original poster should show his son this video about how, by just observing the skies and the movements of stars and planets, a man can come about laws of planetary motion which work everywhere in the universe and challenge preconceived perceptions of his era.
    The programme is over 30 years old but still valid and completely accurate.

    http://www.youtube.com/watch?v=ICHDl0olsS0


  • Advertisement
  • Closed Accounts Posts: 2,062 ✭✭✭al28283


    gkell2 wrote: »
    Most observers know political spin when they see it besides we are not only standing on a moving Earth as it now overtakes Mars,we are also rotating which accounts for the daily return of the Sun so both motions are bound together without having to leave the planet or imagine what things look like from the Sun.Once a person comes to understand the basics of planetary dynamics through all the tools we have today,they are not going to fall for something that is false and especially Newton's unacceptable view which started these modeling and predictions agendas that are now running amok today.

    Observers must be clear that the older astronomers used the background stars to gauge not only retrograde motion but the periods for each planet and they organized the structure of the solar system this way -

    "Of all things visible, the highest is the heaven of the fixed stars. This, I see, is doubted by nobody. But the ancient philosophers wanted to arrange the planets in accordance with the duration of the revolutions. Their principle assumes that of objects moving equally fast, those farther away seem to travel more slowly, as is proved in Euclid's Optics. The moon revolves in the shortest period of time because, in their opinion, it runs on the smallest circle as the nearest to the earth. The highest planet, on the other hand, is Saturn, which completes the biggest circuit in the longest time. Below it is Jupiter, followed by Mars.
    With regard to Venus and Mercury, however, differences of opinion are found. For, these planets do not pass through every elongation from the sun, as the other planets do. Hence Venus and Mercury are located above the sun by some authorities, like Plato's Timaeus, but below the sun by others, like Ptolemy [Syntaxis, IX, 1] and many of the modems. Al-Bitruji places Venus above the sun, and Mercury below it. " Copernicus

    The ancients had the Sun moving between Venus and Mars as the 365 days it took to complete a year falls between the orbital period of 687 days for Mars and 225 days for Venus.In short there is a whole line of reasoning behind the orbital motion of the Earth that is being shortcircuited by followers of Newton who overreached with their conclusions to suit themselves.A short detour to the online orrery really helps to put observations in place,the use of the background stars and the period it takes a planet to return to the same grouping of stars -

    http://apod.nasa.gov/apod/ap011220.html


    To cut a long and very tangled story short,the followers of Newton introduced a rotating celestial sphere or 'right ascension' observing as it is called which completely obliterates appreciation of the motion of planets against the distant stars and to each other as they move around the Sun.The online orrery is in competition with the Ra/Dec celestial sphere which looks like this -

    http://www.youtube.com/watch?v=hYqh72i2mhg

    It is really bad business but there is no need to swamp the reader who is unfamiliar with the issues with things they don't need but at least they can say with 100% certainty that those who follow Newton get it wrong by using all the tools we have today to affirm it.If you wish to remain with political spin for Newton's sake then good for you but effectively that is all it will be.

    Venus and Jupiter is the answer to the Op's question


  • Closed Accounts Posts: 147 ✭✭gkell2


    Biggies wrote: »
    The original poster should show his son this video about how, by just observing the skies and the movements of stars and planets, a man can come about laws of planetary motion which work everywhere in the universe and challenge preconceived perceptions of his era.
    The programme is over 30 years old but still valid and completely accurate.

    http://www.youtube.com/watch?v=ICHDl0olsS0

    There were no 'laws of planetary motion',these things were only attached to Kepler's views by the people in the late 17th century with their own agendas however there is the law of common sense and any observer who goes outside to gain a proper perspective on conjunctions and retrograde motions will have their work cut out for them in making sense of the nightly differences in positions of planets in respect to each other,to a moving Earth and everything moving in one direction around the central Sun.This present conjunction certainly focuses attention on not only the change in position of Venus to Jupiter but the dazzling increase in brightness as a faster Venus moves closer to the Earth just as the headlights of an approaching car increase in brightness due to closer proximity. -

    http://www.masil-astro-imaging.com/SWI/UV%20montage%20flat.jpg

    What Kepler did is easily understandable to an interested adult if they have followed the reasoning so far and he never called them 'laws'.The planets move against the background stars,the Earth orbital motion accounts for the apparent backward motions of planets and the length of time it takes each planet to return to the same stellar background reflect its position from the Sun.

    In the following time lapse footage,observers can see that Saturn takes longer to return to the same background stars than Jupiter hence Saturn is much further away from the central Sun -

    http://apod.nasa.gov/apod/image/0112/JuSa2000_tezel.gif


    "And so if any one take the period, say, of the Earth, which is one
    year, and the period of Saturn, which is thirty years, and extract the
    cube roots of this ratio and then square the ensuing ratio by squaring
    the cube roots, he will have as his numerical products the most just
    ratio of the distances of the Earth and Saturn from the sun. For the
    cube root of 1 is 1, and the square of it is 1; and the cube root of
    30 is greater than 3, and therefore the square of it is greater than
    9. And Saturn, at its mean distance from the sun, is slightly higher
    than nine times the mean distance of the Earth from the sun." Kepler

    He wrote it in a more formal way but there is nothing there that is in anyway different or difficult than the explanation above -

    "The proportion existing between the periodic times of any two planets
    is exactly the sesquiplicate proportion of the mean distances of the
    orbits, or as generally given,the squares of the periodic times are
    proportional to the cubes of the mean distances." Kepler

    Showing a child that video is unhelpful, students and most adults who haven't heard of conjunctions or retrogrades and what they actually represent can now easily understand them with contemporary online tools and it demonstrates that the work of astronomers such as Copernicus,Galileo and Kepler require nothing more than common sense and provide a great way to develop our innate spacial awareness that will last a lifetime.


  • Closed Accounts Posts: 147 ✭✭gkell2


    There is the lovely star and crescent observation out there presently and many flags and coats of arms contain the representation that will always get the attention of all but the most indifferent observer -

    http://www.ngw.nl/int/ier/d/drogheda.htm

    http://en.wikipedia.org/wiki/Star_and_crescent

    It is difficult to imagine another celestial object that would substitute for Venus as the display is striking ,even to the modern eye.


  • Closed Accounts Posts: 5,377 ✭✭✭zenno


    I took a video shot just there of the moon jupiter and venus, though not super clear it's the best this camera can do.



  • Registered Users, Registered Users 2 Posts: 25,965 ✭✭✭✭coylemj


    Four day old Moon will be very close to Venus on Monday 26th.

    It will also be close on April 24th and 25th and May 22nd but not as close as it will be this Monday.


  • Advertisement
  • Registered Users, Registered Users 2 Posts: 337 ✭✭BULLER


    This is the best I could manage. Tried using my binoculars with my cam but I couldnt get the focus right. Any insights on how to do this?


  • Registered Users, Registered Users 2 Posts: 4,228 ✭✭✭Scruff


    BULLER wrote: »
    This is the best I could manage. Tried using my binoculars with my cam but I couldnt get the focus right. Any insights on how to do this?

    Nice! Thats the shot i wanted to take last night but couldnt find my tripod frown.gif
    It really was a fantastic sky last night.


  • Registered Users, Registered Users 2 Posts: 25,965 ✭✭✭✭coylemj


    Scruff wrote: »
    Nice! Thats the shot i wanted to take last night but couldnt find my tripod frown.gif
    It really was a fantastic sky last night.

    +1 that's a great shot BULLER. In order to get the dark side of the Moon and the two planets you have to over-expose so the sunlit sde of the Moon will come out like that, I wouldn't worry about focus. Anyway Jupiter looks like a dot so I think you were focussed properly.


  • Registered Users, Registered Users 2 Posts: 1,144 ✭✭✭peter1892


    Got this earlier on:

    7018572979_e6db04e045.jpg


  • Registered Users, Registered Users 2 Posts: 36 fermi-paradox


    I was trying for piccies of moon, venus and jupiter, but couldn't get it right, so had a go a the moon by itself. This is very poor which is not surprising given the Heath-Robinson set up I took it with but there is one thing I would ask any experts assembled here,

    At the lower left end of the crescent there are two dots, they are on all the shots I took, are they mountains catching the sunrise on the moon or am I just being an idiot.


  • Registered Users, Registered Users 2 Posts: 3,180 ✭✭✭bryaner


    Ardent wrote: »
    Jupiter and Venus. Jupiter being the higher of the two.

    Top tip: install the excellent and free Stellarium - great app for discovering what's in the sky at any given moment.

    Thanks for the app dude really good


  • Registered Users, Registered Users 2 Posts: 1,506 ✭✭✭shizz


    bryaner wrote: »
    Thanks for the app dude really good

    I'd also recommend Celestia for having a stroll around the solar system and the galaxy :)


  • Registered Users, Registered Users 2 Posts: 420 ✭✭Green Diesel


    Snapped myself my first pic of the moon and Venus.

    Sorry bout the quality, was limited to my smartphone, and I couldnt get it to work with the binoculars! :pac:

    197755.jpg


  • Registered Users, Registered Users 2 Posts: 3,744 ✭✭✭deRanged


    my attempt at the moon and Venus.

    6872825910_b1a54e1dbf_z.jpg
    the moon and Venus. by Brian Clayton, on Flickr


  • Registered Users, Registered Users 2 Posts: 100 ✭✭afterhours


    I see 2 moons in front of that planet, the second planet (Venus) isn't there. Tonight (26th) I think it's Jupiter up there shining brightly......


  • Advertisement
  • Registered Users, Registered Users 2 Posts: 25,965 ✭✭✭✭coylemj


    At the lower left end of the crescent there are two dots, they are on all the shots I took, are they mountains catching the sunrise on the moon or am I just being an idiot.

    Yes, they are mountain tops catching the light of the rising sun before the surrounding lunar landscape so they look like isolated dots of light.


  • Registered Users, Registered Users 2, Paid Member Posts: 16,115 ✭✭✭✭loyatemu


    quite pleased with how this turned out as I just had the camera balanced on my car and propped up on my (empty) wallet :)

    197864.jpg

    Put your money where yer mouth is... Subscribe and Save Boards!

    https://subscriptions.boards.ie/



  • Registered Users, Registered Users 2 Posts: 352 ✭✭jfSDAS


    nice photos everyone of what has been a dramatic evening sky encounter between the Moon & planets. Venus will glide past the Pleiades star cluster the first few days of April and will be spectacular in binoculars.


Advertisement