title: Download JPG from website with no extension
body: <p>Is there any way I can download an image from a website that has no extension associated with it?  I'm currently using Python to do this but when I try to use the command:</p>
  
  <pre><code>url = 'http://dcdbs.ssec.wisc.edu/inventory/image.php?sat=GOES-13&amp;date=2012-06-12&amp;time=03:32&amp;type=Imager&amp;band=2'
  urllib.urlretrieve(url)
  </code></pre>
  
  <p>the image is downloaded, however the file is empty.  This command works with images that have extensions. </p>
  
  <p>I'm not all that familiar with urllib.  I'd like to do this preferably with Python, but Java would be ok too.  This seems like a fairly simple thing to do, but I've spent quite a bit of time on it with no luck.  </p>
  
  <p>Thanks! </p>