Gadget in-extremis: DECam dark energy camera snaps redshifting General Gadget Master
2013/07/18
Q: How many megapixels?
A: 570 megapixels!
The Dark Energy Camera (DECam) is now installed at the Blanco Telescope in Chile (see below), part of the Dark Energy Survey, reports New Scientist.
No ordinary camera, it captures light that has been stretched to higher wavelengths by the accelerating expansion of the universe. Apparently, cosmologists hope that studying this “redshifting” will reveal more about dark energy.
It consists of 74 CCDs and five lenses, biggest being almost 1 meter in diameter…
Jacob Aron writes:
DECam captures 570 megapixel images, about 100 times higher resolution than those taken by a typical smartphone, but the camera also has a wide view. A single image records an area of the sky 20 times larger than the moon as seen from Earth.
That’s not the only difference between DECam and more down-to-earth snappers.
Cylindrical controls called hexapods, which you can see sitting roughly in the middle of the camera, constantly tweak the camera’s focus to ensure a high image quality. The black box just to their left is a cartridge of swappable filters that let different wavelengths through.
Perhaps the only thing DECam can’t do is upload its snaps to Facebook in a single click.
Read the full article »
The Dark Energy survey team write:
The science requirements of the Dark Energy Survey drive the construction of a brand new camera. Named DECam, this large, 570 Megapixel camera will hold 74 CCDs constructed specifically to be sensitive to the redshifted light from distant galaxies and stars. DECam will have the widest field of view in the NOAO ground-based optical/infrared system of imagers. Its 2.2 degree field of view is so large that a single image will record data from an area of the sky 20 times the size of the moon as seen from earth. This wide field of view requires that DECam use a system of five lenses, each one uniquely shaped to correct a variety of optical aberrations, with the biggest of these lenses being almost 1 meter in diameter.
See the camera being built:
Welcome to SUV System Ltd!
SUV System Ltd is ISO 90012008 Certified electronics distributor with 10 years of experiences.
We have built up long term business relationship with about many companies which are stockers and authorized agents. we have a steady and reliable supply to meet customer's demands to the greatest extent .Confidently, we are able to lower your cost and support your business with our years of professional service.
SUV System Ltd is Electronic Components Distributor Supplies,Find Quality Electronic Components Supplies Products IC(Integrated Circuits),Connectors,Capacitor,Resistors,Diodes,Transistors,LED at Suvsystem.com. Sourcing Other Energy, Environment, Excess Inventory Products from Manufacturers and Suppliers at Suvsystem.com
Electronic Components distributor:http://www.suvsystem.com
Connectors Distributor:http://www.suvsystem.com/l/Connectors-1.html
IC Distributor:http://www.suvsystem.com/l/IC(Integrated-Circuits)-1.html
LED Distributor:http://www.suvsystem.com/l/LED-1.html
Capacitor Distributor:http://www.suvsystem.com/l/Capacitor-1.html
Transistor Distributor:http://www.suvsystem.com/l/Transistors-1.html
Resistor Distributor:http://www.suvsystem.com/l/Resistors-1.html
Diode Distributor:http://www.suvsystem.com/l/Diodes-1.html
SUV System Ltd insists on the managing faith ofsincereness,speciality,foresight, win-win,so we build up stable-relationship customers located all over the world, including the States, Europe, Argentina, UAE, Malaysia, Australia,and India etc
we are focus on the following fields,and hope we can help you.
Cypress IC About US Infineon Technologies Transistors ST Diodes YAGEO Resistors Kingbrigt LED Diodes Inc Chip Inductors Thick Film Resistors Renesas parts IC LINEAR IC Thin Film Resistors chip Filter saws HARRIS IC PANASONIC DIODES Transistors TI IC Schottky Diodes Ligitek LED Microchip IC LED part NS IC Industrial IC TOSHIBA Transistors Fleld Effect Transistors IR transistor TDK IC AVX Resistors Transistors Freescale Civil IC LED Bipolar Transistors Vishay resistors INFLNEON Diodes LITTELFUSE Diodes Electronic News ALTERA IC TOSHIBA Diodes ROHM Resistors Resistors
http://www.suvsystem.com/a/4086.aspx
没有评论:
发表评论