File:Landsat-7 Scan Line Corrector operation.jpg

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Summary

Description	English: Landsat 7 Scan Line Corrector operation from the Landsat 7 Science Data Users Handbook The Scan Line Corrector (SLC) is an electro-optical mechanism composed of two parallel nickel-plated beryllium mirrors set at an angle on a shaft. The shaft, driven by a torquer which has primary and redundant tachometers, rotates about an axis normal to the axis of the scan mirror in a sawtooth fashion. The SLC is positioned behind the primary optics and compensates for the along track motion of the spacecraft that occurs during an active SMA cross track scan. A rectilinear scan pattern is produced using the SLC instead of the zig-zag pattern that would be produced without it.
Date	Unknown date Unknown date
Source	http://landsathandbook.gsfc.nasa.gov/payload/prog_sect3_3.html#section3.3.3
Author	NASA/Goddard Space Flight Center

Licensing

	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.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

Original upload log

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2006-12-20 04:30 Seventypercent 300×399× (40508 bytes) {{PD-USGov-NASA}}

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	02:23, 23 June 2014		290 × 389 (68 KB)	Ras67	cropped
	02:21, 23 June 2014		300 × 399 (40 KB)	Ras67	== {{int:filedesc}} == {{Information \|Description={{en\|1={{w\|Landsat 7}} Scan Line Corrector operation from the Landsat 7 Science Data Users Handbook}} \|Source=http://landsathandbook.gsfc.nasa.gov/payload/prog_sect3_3.html#section3.3.3 \|Date={{other da...

File usage

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Landsat 7

Global file usage

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Usage on ar.wikipedia.org
- لاند سات 7
Usage on ms.wikipedia.org
- Landsat 7

Metadata

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Orientation	Normal
Horizontal resolution	150.0124 dpi
Vertical resolution	150.0124 dpi
Software used	Adobe Photoshop
File change date and time	03:41, 23 June 2014
Color space	sRGB