The Sun - July 19, 2012

     

The Sun - July 19, 2012

This image of the Sun was taken with a hydrogen-alpha telescope on July 19, 2012 at 1 p.m., just before the Public Observatory opened for the afternoon.

The Sun was relatively quiet that day, though solar maximum (the peak of sunspot activity) is forecasted to be less than a year away.  Just two sunspots were visible.  To lower left, sunspot 1525 is marked by a bright plage (cloud of hot gas) above it.  Sunspot 1523 has almost rotated out of view to lower right.

Though there are several prominences visible around the edge of the Sun, none are very dramatic.  The bright, low prominence to the right stands about as tall as the Earth.

Telescope: Lunt 100mm Hydrogen-alpha

Camera: SkyNYX 2-2M

Image Number: WEB12555-2012
Credit: Image by Geneviève de Messières, Smithsonian Public Observatory Project
For print or commercial use, please contact: Smithsonian Institution
Reproductions are not currently available. If you would like to use this image as-is, please submit a permission request.

Large JPEG (1216 x 1616 pixels)