Image: Composite of a series of images taken from space aboard the space station

May 18, 2012

(Phys.org) -- This is a composite of a series of images photographed from a mounted camera on the Earth-orbiting International Space Station, from approximately 240 miles above Earth.

Expedition 31 Don Pettit said of the about photographic techniques used to achieve the images: "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."

A total of 18 images photographed by the astronaut-monitored stationary camera were combined to create this composite.

Explore further: How bad can solar storms get?

Related Stories

Space Image: Earth observations

Jan 09, 2012

(PhysOrg.com) -- This unusual image was photographed through the Cupola on the International Space Station by one of the Expedition 30 crew members.

Rosetta: OSIRIS’ view of Earth by night

Nov 15, 2007

This striking composite of Earth by night shows the illuminated crescent over Antarctica and cities of the northern hemisphere. The images were acquired with the OSIRIS Wide Angle Camera (WAC) during Rosetta’s ...

The Planet, the Galaxy and the Laser

Aug 03, 2007

On the night of 21 July, ESO astronomer Yuri Beletsky took images of the night sky above Paranal, the 2600m high mountain in the Chilean Atacama Desert home to ESO's Very Large Telescope. The amazing images ...

Recommended for you

How bad can solar storms get?

14 hours ago

Our sun regularly pelts the Earth with all kinds of radiation and charged particles. How bad can these solar storms get?

Mars rover's ChemCam instrument gets sharper vision

15 hours ago

NASA's Mars Curiosity Rover's "ChemCam" instrument just got a major capability fix, as Los Alamos National Laboratory scientists uploaded a software repair for the auto-focus system on the instrument.

GOES-R satellite begins environmental testing

May 21, 2015

The GOES-R satellite, slated to launch in 2016, is ready for environmental testing. Environmental testing simulates the harsh conditions of launch and the space environment once the satellite is in orbit. ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.