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International Space Station

Discussion in 'Space Weather & Astronomy' started by Cactus, Jan 4, 2011.

  1. Cactus Moderator

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    I saw it and thought it was strange, I checked the map and realised you must have got something wrong.
  2. Nimbus Fresh Breeze

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    I managed to catch the ISS on it's first pass, below Jupiter tonight.
    At the same time an apparent meteor appeared in the sky, moving, I think from South to North, and it also appeared in the time exposure.
    The first image shows the partial pass of ISS and the meteor, but because it is quite faint, I have included another cropped image
    of the meteor, with the contrast enhanced slightly. The trail is faintly visible extending in front of and behind the shorter bright part of the trail.
    It's amazing, you can try for hours to photograph a meteor and one appears by accident.
    As there are no showers at the moment, I assume it was a sporadic.
    Did anyone else see it?
    The rays radiating from the bottom of the image are from a street light, but I don't exactly know why.

    Attached Files:

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  3. LeoLion Gale

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    Congratulations on your meteor . As you say , probably a sporadic and in early evening they are thin on the ground ! There is a diurnal variation for the sporadic background with far more being visible in the morning sky than early evening . Have a look at Fig 2.2 here www.springer.com/cda/content/.../9780387094601-c1.pdf?...0-0.... . The meteor maybe appears at 100 km up and has ablated by 70 km up so unless intrinsically bright ( a fireball as bright as Venus - 4 or 1 st quarter moon -8 ) it will not be visible to a lot of our southern forumites .Given clear sky then this one could have been visible perhaps from 80 to 100 km away , very much dependant on the geometry of it if appeared in the sky between the two observers ( or not ) which would give the greater probablity . It looks like the link to PDF is not working so this one may explain http://adamrmarsh.customer.netspace.net.au/index_files/Page1823.htm
  4. Cactus Moderator

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    The pass on New Years Day, today, at 16:15 looks like it could be a good photo opportunity as it passes very close to Jupiter with the moon close by.
    At a maximum height of 65ยบ it should, given clear skies, be easy to spot.
  5. Nimbus Fresh Breeze

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    The forecast for here looks promising for at least a partially clear sky.
    Unfortunately the first pass tonight is less than half an hour after sunset, and the moon will be very bright, so a time
    exposure of any length is likely to be virtually blank.
    Also, I have learned from experience that the map on Heavens Above gives a misleading impression of how close the ISS goes to objects such as Jupiter.
    I might try a very short time exposure as it passes below the Moon and Jupiter.
  6. Nimbus Fresh Breeze

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    The sky was mostly clear, but with a lot of hazy cloud.
    I could see the Moon and Jupiter quite clearly, but for some reason I never saw ISS.
    I did a test 10 sec t/e and it was virtually blank, so that wouldn't have worked anyway.
  7. Cactus Moderator

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    Total cloud cover here, nothing to be seen.
  8. Nimbus Fresh Breeze

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    The second pass was visible here, as the sky cleared later on.
    Unfortunately light pollution too bright for a decent time exposure.
  9. Cactus Moderator

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    Quite a good view here tonight ISS passed above Venus and then below Juipter which itself is very close to the Moon.
  10. Nick HH Strong Breeze

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    Dam, i was planning to go out and watch that pass over.

    Hopefully ill be able to catch the next one in an hour.
  11. Blizzard LKJ Moderator

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    What time roughly is next pass? Will it be similar postion near moon again?
  12. Nimbus Fresh Breeze

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    There are no more passes (at least for my location) expected tonight.
    The next one is expected tomorrow night at 15:58.
    There is another one expected at 17:34 tomorrow and then two more evening ones before they come to an end for the time being.
    No more near the moon this time, but the one on Friday goes quite close to Venus.
    After that, the next set of morning passes is due to start on January 14th.
    Normally if there is more than one visible pass, they will be about 90min apart, since that is roughly
    how long a near earth orbit takes.
    The best way of finding out the accurate time of passes is to enter your location details in the Heavens above website:
    http://www.heavens-above.com/
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  13. Blizzard LKJ Moderator

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    Thanks Nimbus i will have a look at that website i found one too http://iss.astroviewer.net/ it has a google map showing where it is and a view of what they are seeing on the ISS
  14. Nick HH Strong Breeze

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    Ive been using Heavens-Above and for me is says the next pass starts at 18:34:43 and last for 3 minutes. Its passes close to Venus so i might not see anything. ill find out in 10 minutes.
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  15. Nick HH Strong Breeze

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    The ISS was going over spain, i did see something near the horizon moving quicky, wasnt a flashing light, so didnt think it was a plane.

    But anyway, ill hope to get a better view of it in the future!

    (Also, sorry for the double post, hope you dont get out your pitch forks!)
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