A&P Stars & Earth Rotation...

Discussion in 'Lifestyle' started by verbal, Mar 31, 2008.

  1. verbal

    verbal Active Member

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    A long time ago, I remember seeing a picture of stars. The shutter was open so long, that you could see a trail of the stars due to earths rotation.

    I just ordered the Canon IR remote, which has a function where you can hit a button to open the shutter and hit it again to close it. So last night I was thinking, how I could take a pic like the above.

    I'll be on vacation next week and I was thinking about trying a shot like this. I'm not sure how long the shutter would have to be open to catch this shot, or if it's even possible with the gear I have. But it's worth a try.

    Anyone ever see this? Or do it?
     
  2. OlafBeserka

    OlafBeserka girls pee pee when they see me OT Supporter

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    yeah you need to leave it open for like an hour or so
     
  3. verbal

    verbal Active Member

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    Could leaving it open that long cause problems?
     
  4. Jcolman

    Jcolman OT Supporter

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    I've seen quite a few excellent shots like you've described. The main trick is to find a location that isn't "light polluted". Start with a 2 or 3 hour exposure at f/8 and 100iso. Also, try and get something of interest in the foreground that won't move in the wind.
     
  5. Jcolman

    Jcolman OT Supporter

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    dust on the sensor is really the only issue.
     
  6. ihaveanevilplan

    ihaveanevilplan Everybody wake up, wake up, it's time to get down Moderator

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    an hour will get you some really long trails

    15-20 mins should get you some nice little trails
    make sure you have a tripod (obviously)
     
  7. g33k

    g33k OT Supporter

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    turn off long exposure nr unless you feel like waiting twice as long for the shot
     
  8. IntheWorks

    IntheWorks windin film.. takin pics Moderator

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    I've read that the best way to get what your describing is several shorter exposures blending in photoshop.
     
  9. ihaveanevilplan

    ihaveanevilplan Everybody wake up, wake up, it's time to get down Moderator

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    that's cheating! :mamoru:
     
  10. IntheWorks

    IntheWorks windin film.. takin pics Moderator

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    yeah, but it works controlling the light pollution....
     
  11. Jcolman

    Jcolman OT Supporter

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    Here you go. This will help you set your shot.

    [​IMG]


    A couple of cool shots.

    [​IMG]

    [​IMG]
     
  12. IntheWorks

    IntheWorks windin film.. takin pics Moderator

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    nice info on the pattern of stars :cool:
     
  13. CornUponCob

    CornUponCob New Member

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    I've got a ~ 15 second time lapse of the starts overnight. I think it's about 8 hours of images... I forgot. Vid is 75ish megs. I'll upload it one of these days.
     
  14. OlafBeserka

    OlafBeserka girls pee pee when they see me OT Supporter

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    Doesnt the sensor get pretty hot if its open that long? I remember reading somewhere that it does.
     
  15. nicklk

    nicklk New Member

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    Here is one I did when I was in Arizona about a year ago, I cant access EXIF at work, but I think its a 45 minute exposure......and it was PITCH black out

    [​IMG]
     
  16. nicklk

    nicklk New Member

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    This one is 30 or so minutes, in the middle of the woods of Wyoming aka "So dark its almost impossible to find a focal point"

    [​IMG]
     
  17. verbal

    verbal Active Member

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    nr?
     
  18. redna

    redna New Member

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    20.6 min

    1236 second
     
  19. redna

    redna New Member

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    noise reduction
     
  20. verbal

    verbal Active Member

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    I'll be at the beach in Destin, FL. Hopefully it'll be dark enough to try this.
     
  21. nicklk

    nicklk New Member

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    Sweet, thanks.
     
  22. Jcolman

    Jcolman OT Supporter

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    I've been to Destin. Most likely it won't be dark enough.
     
  23. OlafBeserka

    OlafBeserka girls pee pee when they see me OT Supporter

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    canon's IS or nikons VR
     
  24. strubbe

    strubbe New Member

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    Good luck. :o
     
  25. IntheWorks

    IntheWorks windin film.. takin pics Moderator

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    that would be image stabalization, not noise reduction. NR is in the body under custom functions. IS and VR is in the lens.
     

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