File:C G-K - DSC 0442 (by).jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 535 pixels. Other resolutions: 320 × 214 pixels | 640 × 428 pixels | 1,024 × 685 pixels | 1,280 × 856 pixels | 2,560 × 1,712 pixels | 3,888 × 2,600 pixels.
Original file (3,888 × 2,600 pixels, file size: 2.37 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
| Description |
English: Front view of antennas of the Allan Telescope Array, a radio telescope for combined radio astronomy and SETI (search for extraterrestrial intelligence) research being built by the University of California at Berkeley, outside San Francisco. The first phase, consisting of 42 6-meter dish antennas shown here, was completed in 2007. Eventually it will have 350 antennas. This type of antenna is called an offset Gregorian design. The incoming radio waves are reflected by the large parabolic dish onto a secondary parabolic reflector in front of the dish, and then into a feed horn. A metal shroud along the bottom of the secondary reflector shields the antenna from ground noise. It covers the frequency range from 0.5 to 11.2 GHz. |
| Date | |
| Source | DSC_0442 |
| Author | Colby Gutierrez-Kraybill |
Licensing[edit]
.jpg&action=edit§ion=1){kind=link}
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image, originally posted to Flickr, was reviewed on September 29, 2008 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:22, 29 September 2008 | | 3,888 × 2,600 (2.37 MB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description= |Source=[http://www.flickr.com/photos/69043449@N00/1558791338/ DSC_0442] * Uploaded by ComputerHotline |Date=October 11, 2007 at 10:56 |Author=[http://www.flickr.com/people/69043449@N00 Colby Gutierre |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on el.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on hr.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on sr.wikipedia.org
.jpg&oldid=844985297){kind=link}