Image:Starfield Optical Range - sodium laser.jpg
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This is a file from the Wikimedia Commons. The description on its description page there is shown below. |
Original caption: "This sodium laser—being fired from the Starfire Optical Range on Kirtland Air Force Base, New Mexico—is used with deformable optics to help eliminate atmospheric distortions when gathering images of objects in space."
Though the caption states that this is a "sodium laser", this is actually misleading as the Starfire Optical Range LIDAR laser seen here is actually two solid state IR lasers, 1.064 and 1.319 microns, that are frequency summed in LBO within a doubly resonant cavity. The orange beam is observed due to the intense laser light scattering off particles in the air. In general, laser light travelling through a vacuum can not be seen unless aimed directly towards the observer.
License
- Source: Directed Energy Directorate, US Air Force
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This image or file is a work of a U.S. Air Force Airman or employee, taken or made during the course of the person's official duties. As a work of the U.S. federal government, the image or file is in the public domain. |
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File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 23:32, 4 May 2006 | 2,000×3,008 (4.3 MB) | Fastfission | (Original caption: ''"This sodium laser—being fired from the Starfire Optical Range on Kirtland Air Force Base, New Mexico—is used with deformable optics to help eliminate atmospheric distortions when gathering images of objects in space."'' ==License) |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
| Camera manufacturer | NIKON CORPORATION |
|---|---|
| Camera model | NIKON D70 |
| Exposure time | 30/1 sec (30) |
| F-number | f/4.5 |
| Date and time of data generation | 12:19, 27 October 2004 |
| Lens focal length | 50 mm |
| Orientation | Normal |
| Horizontal resolution | 240 dpi |
| Vertical resolution | 240 dpi |
| Software used | Adobe Photoshop CS Macintosh |
| File change date and time | 10:37, 28 October 2004 |
| Exposure Program | Manual |
| ISO speed rating | 320 |
| Aperture | 4.33985 |
| Exposure bias | 1.67 |
| Maximum land aperture | 4.3 |
| Metering mode | Pattern |
| Flash | 0 |
| Colour space | sRGB |
| Focal length in 35 mm film | 75 |
