While most people have seen a star trail photo or two, seeing a set of star trail photos taken from over 300 miles above the Earth’s surface is a treat.
Courtesy of Astronaut and Expedition 31 Flight Engineer Don Pettit, the photos capture star trails from the vantage point of the International Space Station. He explains his technique:
My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.
Hit up the link below for the full Flickr set of the star trails.
ISS Star Trails [via Smithsonian Magazine]
Responses to this week’s Ask the Reader question show that just because you’re away from home doesn’t mean you have to give up the security and privacy that your home network provides.
Have you or someone you know continued to use Firefox 3.6 because your favorite extensions were not updated for Firefox 4.0 and beyond? Perhaps you updated Firefox but lost that wonderful extension’s functionality and w...
In this week’s game infection of all cell-kind is the ultimate goal as you lead your virus army to victory. Will you succeed in infecting everything in your path or will you be stopped just short of total domination?
This past month we covered topics such as alternative search engines that respect your privacy, tips and tweaks for getting the most out of Chrome, using camera Raw tools to develop digital photographs, and more. Join us as we look back at the most popular articles for May.
This week we’re taking a look at how to make your own stylus, turning your old CDs or DVDs into a game, and digging up Kindle screensavers on Flickr.
Want to get the latest version of Windows 8 right now? This one is called the Release Preview, and it’s available for download right now. There’s a lot of little bugs resolved, the multi-monitor support has improved, and you should download it now.
We’ve shown you how to enhance Internet Explorer with add-ons, similar to Firefox and Chrome. However, too many add-ons can slow down Internet Explorer and even cause it to crash. However, you can easily disable some or all add-ons.
Think you know the answer? Click through to see if you're right!
When you’re browsing away from home, be it on your smartphone, tablet, or laptop, how do you keep your browsing sessions secure? This week we’re interested in hearing all about your mobile security tips and tricks.
If you’re one of those who still use that “other” browser (Internet Explorer or IE), you’ll be glad to know that there are ways to extend the functionality of IE just like you can in Firefox or Chrome.
While most people have seen a star trail photo or two, seeing a set of star trail photos taken from over 300 miles above the Earth’s surface is a treat.