High Definition Earth Viewing cameras
High Definition Earth Viewing (HDEV) cameras are a payload package delivered to the International Space Station on the SpaceX CRS-3 Mission, launched on April 18, 2014. The High-Definition Earth Viewing camera suite was carried aboard the Dragon spacecraft and is configured on a platform on the exterior of the European Space Agency's Columbus laboratory module. It is the first large unpressurized NASA experiment to be assigned for delivery to the International Space Station by SpaceX. The system is composed of four commercial high definition video cameras which have been built to record video of the Earth from multiple angles by having them mounted on the International Space Station. The cameras stream live video of Earth to be viewed online and on NASA TV on the show Earth Views which is streamed live. (see External Links below).
The HDEV system was developed by engineers at the Johnson Space Center in Houston, Texas. High school students also helped design some of the cameras' components, through the High Schools United with NASA to Create Hardware program, and teams of students are expected to remotely operate the experiment.
The system is configured on the Columbus – External Payload Facility, which is a platform on the exterior of the European Space Agency's Columbus laboratory module where it is used to perform experiments to help NASA determine which cameras work best in outer space. The cameras are enclosed in a temperature-specific housing and exposed to the harsh radiation of space.
The German educational project “Columbus Eye - Live Imagery from the ISS in Schools”, which is executed by the University of Bonn and is funded by the German Aerospace Center (DLR), aims at the implementation of the ISS live imagery and videos in a web portal. It primarily acts as a learning portal for pupils, but also serves as a free access archive for the footage of the ISS HDEV cameras. Columbus Eye accompanied the ISS mission of the German ESA astronaut Alexander Gerst (May to November 2014).
In August 2019, the experiment seems to have reached end of life. NASA's HDEV live stream on YouTube states: "The High Definition Earth-Viewing (HDEV) experiment on the International Space Station has experienced a loss of data, and ground computers are no longer receiving communications from the payload. A team of engineers are reviewing the available health and status information from HDEV to identify what may have occurred." In the video, NASA writes: "It is with regret that we must inform you that the ISS HDEV payload has reached End of Life. Content for this web stream is being assessed and will be available in the near future."
- "ISS Launch Updates". NASA. Retrieved 18 April 2014.
- STEPHEN CLARK (2013-03-21). "SpaceX confirms March 30 date for resupply launch". spaceflightnow.com. Retrieved 2014-03-22.
- "NASA planners switch next SpaceX Dragon mission to 2014". NASASpaceFlight.com. 2013-08-14. Retrieved 2014-03-10.
- Susan Runco (2014-03-25). "High Definition Earth Viewing (HDEV)". NASA. Retrieved 2014-04-18.
- Rienow, A.; Hodam, H. & Menz, G. (2014):Columbus Eye – HD-Erdbeobachtung von der ISS. Gemeinsame Tagung 2014 der DGfK, der DGPF, der GfGI und des GiN (DGPF Tagungsband 23 / 2014). Beitrag 112. Archived 2014-05-28 at the Wayback Machine
- NASA Live: Earth Views from the Space Station, retrieved 2019-08-29
- "HDEV". eol.jsc.nasa.gov. Retrieved 2019-08-29.