HD ISS Live VideoEarth HD Live View From Satellite Online. Live video from the station is available only when the complex is in contact with the ground through its high-speed communications antenna and NASA's Tracking and Data Relay Satellite System.
HDEV live (High Definition Earth Viewing System)
ISS HD Earth Viewing Experiment
The High Definition Earth Viewing (HDEV) experiment places four commercially available HD cameras on the exterior of the space station and uses them to stream live video of Earth for viewing online. On April 30, 2014, the space agency activated its High Definition Earth Viewing (HDEV) experiment, involving four commercial HD cameras aboard the ISS*. The Earth-facing cameras, which are enclosed in a pressurized and temperature-controlled housing, began streaming video live to the world on May 1, 2014. But viewers will have to wait a little longer to enjoy the live feed. It is mounted on the External Payload Facility of the ESA’s Columbus (Solar) module. Analysis of the effect of space on the video quality, over the time HDEV is operational, may help engineers decide which cameras are the best types to use on future missions. Video from these cameras is transmitted back to earth and also streamed live on this channel. While the experiment is operational, views will typically sequence though the different cameras. Between camera switches, a gray and then black color slate will briefly appear. Since the ISS is in darkness during part of each orbit, the images will be dark at those times. During periods when the space station is out of range of NASA’s communications channels you will see a - Loss of Signal - gray screen or previously recorded video.
- “While the HDEV collects beautiful images of the Earth from the ISS, the primary purpose of the experiment is an engineering one: monitoring the rate at which HD video camera image quality degrades when exposed to the space environment (mainly from cosmic ray damage) and verify the effectiveness of the design of the HDEV housing for thermal control.
- The four cameras of the HDEV experiment are oriented in different directions and with different views relative to the ISS travel direction. They are in positioned, 1 looking forward, 1 looking nearly straight down, and 2 looking back. This provides several different viewing angles to the viewer.
- The cameras are programmed to cycle from one camera to the next, and only one camera can work at a time. As they cycle, each camera must turn off and the next camera turn on before the HD video starts, taking about 8 to 10 seconds to change. Through this cycling, comparable data can be collected on each camera; while also providing, as a bonus, different Earth viewing perspectives.
- The University of Bonn in partnership with the German Space Agency (DLR) is implementing the “Columbus Eye” program based on the HDEV streaming video. A webpage is in place (http://columbuseye.uni-bonn.de/ in German) that incorporates the HDEV UStream video and describes the Columbus Eye project, which will leverage ESA (European Space Agency) astronaut Alexander Gerst educational activities in space.“
- HDEV suite is configured on a platform on the exterior of the European Space Agency’s Columbus laboratory module of the ISS.