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Farside Images

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Seismic images of magnetic activity on the farside of the Sun that we cannot directly see from Earth. The images show sound wave travel time variations, with locations of shorter travel times appearing darker. These darker regions indicate locations where there is an accumulation of magnetic field on the far surface.   Both a Line of Sight projection (left) and a Longitude Sine of Latitude projection (right) of the farside images are shown. (more info)

The method for estimating far-side magnetic activity was developed by Charles Lindsey and Doug Braun of Colorado Research Associates, a division of Northwest Research Associates, Boulder, Colorado. (references and links)

GONG Calibrated Farside Map
Latest GONG Image
18 Jun 2012 00:00 UT    : Mon Jun 18 21:21:47 UT 2012     Duty Cycle: 1.00   details Info


HMI Calibrated Farside Map
Latest HMI Image


Latest Farside Maps from GONG

Line of Sight Longitude ― Sine of Latitude
Latest LOS Image Latest Image
18 Jun 2012 00:00 UT    : Mon Jun 18 21:21:47 UT 2012   Duty Cycle: 1.00   

Latest LOS Image Latest Image
17 Jun 2012 12:00 UT    : Mon Jun 18 09:31:04 UT 2012   Duty Cycle: 1.00   

Latest LOS Image Latest Image
17 Jun 2012 00:00 UT    : Sun Jun 17 21:24:02 UT 2012   Duty Cycle: 1.00   

Latest LOS Image Latest Image
16 Jun 2012 12:00 UT    : Sun Jun 17 09:28:53 UT 2012   Duty Cycle: 1.00   

Latest LOS Image Latest Image
16 Jun 2012 00:00 UT    : Sat Jun 16 21:24:30 UT 2012   Duty Cycle: 1.00   


Links of Interest

Press releases and media coverage of initial far-side announcement:


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Please contact farside@nso.edu if you have any questions or find a problem.

Generated: Mon Jun 18 15:35:01 2012
National Solar Observatory