File:Lunar transit (captured by the Solar Dynamics Observatory).jpg

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The Moon came in between the Solar Dynamics Observatory (SDO) satellite and the Sun (seen here in 304 Å extreme ultraviolet light) and produced a partial solar eclipse from space. For 1 hour and 41 minutes team SDO observed the lunar transit. This event only happens a few times a year, but it does give the SDO team an opportunity to better understand the AIA instrument on SDO and give it a fine-tuning. The sharp edge of the lunar limb helps researchers measure the in-orbit characteristics of the telescope, e.g., how light diffracts around the telescope's optics and filter support grids. Once these are calibrated, it is possible to correct SDO data for instrumental effects and sharpen the images even more than before.

Date

21 February 2012, 13:58:02

Source

http://www.nasa.gov/mission_pages/sdo/multimedia/potw/potw-89.html (direct link)

Author

NASA/SDO

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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.)
	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	01:36, 5 March 2012		2,400 × 2,400 (5.91 MB)	Prof. Professorson (talk \| contribs)	Removed timestamp using resynthesizer.
	22:33, 4 March 2012		2,400 × 2,400 (5.94 MB)	Prof. Professorson (talk \| contribs)	{{Information \|Description=The Moon came in between the en:Solar Dynamics Observatory (SDO) satellite and the en:Sun (seen here in extreme en:ultraviolet light) and produced a partial en:solar eclipse from space. For 1 hour and ...

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File:Lunar transit (captured by the Solar Dynamics Observatory).jpg

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inception

21 February 2012

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image/jpeg