File:How Will We Sustain a More Populated Planet? (6350735550).jpg
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Operational Land Imager (OLI) Telescope The OLI telescope uses a four-mirror compact design. The optics are positioned inside a lightweight, yet highly stable, carbon composite optical bench (i.e., a substrate on which the optics are mounted) that has special features to control undesired stray light (stray light is any light entering the optics from someplace other than the observed Earth surface, or imaging “target”). Because OLI is a push-broom instrument, as opposed to a scanner (or “whisk-broom”), it has a wide field-of-view to cover the entire ground swath width. Wide field-of-view telescopes are generally susceptible to stray light, so the OLI telescope is designed for improved stray light control. The number and shapes of the mirrors meet the required optical design parameters, like focal length, for example, within a size that also meets the volume and mass requirements for the instrument. Note: The previous Landsat sensors have used scanner or “whisk-broom” technology. This means that a mirror scans from side-to-side across the satellite path directing light into the instrument detectors. The OLI uses push-broom technology meaning that an array of detectors is used to image the entire swath/width of the satellite path simultaneously. Credit: NASA/GSFC/Landsat NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. Follow us on Twitter Like us on Facebook Find us on Instagram |
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Source | How Will We Sustain a More Populated Planet? |
Author | NASA Goddard Space Flight Center from Greenbelt, MD, USA |
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This image was originally posted to Flickr by NASA Goddard Photo and Video at https://flickr.com/photos/24662369@N07/6350735550. It was reviewed on 17 September 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
17 September 2016
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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current | 21:57, 17 September 2016 | ![]() | 1,239 × 794 (729 KB) | Vanished Account Byeznhpyxeuztibuo (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Headline | How Will We Sustain a More Populated Planet? |
Orientation | Normal |
Horizontal resolution | 72.009 dpi |
Vertical resolution | 72.009 dpi |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 07:12, 17 June 2011 |
Color space | Uncalibrated |
Date and time of digitizing | 03:11, 17 June 2011 |
Date metadata was last modified | 03:12, 17 June 2011 |
Unique ID of original document | xmp.did:F77F117407206811BA029B1B3BE00255 |
IIM version | 4 |