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: Video reveals dramatic Spacex falcon rocket barge landing and launch

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

Ceres' bright spots come back into view

1 hour ago

The two brightest spots on dwarf planet Ceres, which have fascinated scientists for months, are back in view in the newest images from NASA's Dawn spacecraft. Dawn took these images on April 14 and 15 from ...

Vesta—Ceres' little sister

3 hours ago

Only around 60 million kilometres closer to the Sun than Ceres, another large rock is orbiting in the remote asteroid belt: Vesta. Although its diameter of approximately 530 kilometres makes it a bit too ...

Curiosity rover making tracks and observations

Apr 20, 2015

NASA's Curiosity Mars rover is continuing science observations while on the move this month. On April 16, the mission passed 10 kilometers (6.214 miles) of total driving since its 2012 landing, including ...

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.