File:McDonald Observatory 107-inch telescope.png

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Description	English: This is Figure 7-14 in the Apollo 11 Preliminary Science Report (NASA SP-214), 1969, which has the following caption: Optical path in the McDonald Observatory 107- in. telescope. The observatory is located at the University of Texas, at Mount Locke, TX, and in 1969 was the third largest telescope in the world. It was used to make measurements from the earth to the moon using a laser (custom-built two-stage pockels-cell switched ruby system) and the Laser Ranging Retroreflector system left on the lunar surface at the Apollo 11 landing site (Tranquility Base).
Date	1969
Source	Apollo 11 Preliminary Science Report (NASA SP-214), 1969
Author	NASA

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	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."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	13:03, 12 April 2023		780 × 740 (402 KB)	Jstuby (talk \| contribs)	Uploaded a work by NASA from ''Apollo 11 Preliminary Science Report'' (NASA SP-214), 1969 with UploadWizard

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PNG file comment	Created with GIMP
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Vertical resolution	118.11 dpc
File change date and time	12:47, 12 April 2023

File:McDonald Observatory 107-inch telescope.png

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McDonald Observatory

telescope

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1969

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