What is a DECam?
DECam, short for the Dark Energy Camera, is a large camera built to replace the previous prime focus camera on the Victor M. Blanco Telescope. The camera consists of three major components: mechanics, optics, and CCDs.
What is DECam survey?
The Dark Energy Survey (DES) needs to observe hundreds of millions of galaxies to achieve its science goals. The state-of-the-art Dark Energy Camera (DECam) was designed and built from 2004 to 2010.
What is the goal of the Dark Energy survey?
The Dark Energy Survey (DES) is an international, collaborative effort to map hundreds of millions of galaxies, detect thousands of supernovae, and find patterns of cosmic structure that will reveal the nature of the mysterious dark energy that is accelerating the expansion of our Universe.
What is the evidence for dark energy?
The discovery of supernova 1997ff, located about 10 billion light-years away, provided evidence for dark energy. About halfway into the universe’s history — several billion years ago — dark energy became dominant and the expansion accelerated.
What is fire Decam system?
24/7 Fire Monitoring Service (DECAM) Our DECAM system provides vital enhancement to any fire alarm panel. Linked to a round-the-clock Central Monitoring Centre (CMC), the system provides 24 hour vigilance over the people and things that are vital to you.
How does a fire alarm system works?
An addressable fire alarm system works by having every detection and notification device connected to each other and to the addressable fire alarm control panel. An addressable system sends digital signals in binary code, as opposed to a conventional fire alarm system which operates through electrical currents.
When did we discover dark energy?
1998
Dark energy was discovered in 1998 with this method by two international teams that included American astronomers Adam Riess (the author of this article) and Saul Perlmutter and Australian astronomer Brian Schmidt.
Where is the Dark Energy camera?
Cerro Tololo Inter-American Observatory
The instrument used by DES is the newly constructed Dark Energy Camera (DECam), which is mounted on the Victor M. Blanco 4-meter Telescope at the Cerro Tololo Inter-American Observatory (CTIO) in the Chilean Andes.
How is dark energy measured?
The rate of expansion and its acceleration can be measured by observations based on the Hubble law. These measurements, together with other scientific data, have confirmed the existence of dark energy and provide an estimate of just how much of this mysterious substance exists.
Why is dark matter invisible to our telescopes?
Scientists currently estimate that up to 85% of the mass in the universe is effectively invisible. This ‘dark matter’ cannot be observed directly, because it does not interact with light in the same way as the ordinary matter that makes up stars, planets, and life on Earth.
https://www.youtube.com/watch?v=5rAIImMwSBY