DAVE MASON   ASTROPHOTOGRAPHY
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THE SUN

The Sun is the star at the center of the Solar System. Its diameter is about 109 times that of Earth. Its surface temperature is approx. 5,505 °C, 9,941 °F. and is approx. 90,000,000 miles from the Earth.

Technical info: 
TS 80mm f6 APO triplet refractor - ZWO ASI 120MC camera -

             
  click image for enlargement   click image for enlargement   click image for enlargement  
       
 

13 April 2016, the sunspot AR 2529 has recently appeared and is turning toward the Earth. Sunspot AR 2530 can be seen lower right. Sunspots are concentrations of reduced surface temperature, indicating intense magnetic activity.

  

13 April 2016, sunspot AR 2529 showing the dark area of reduced temperature. The Earth could fit 3 times in this black region!

  

19 April 2016, AR 2529 has nearly disapeared (right). The new sunspot AR 2533 has appeared and is smaller than AR 2529.

  
             
             
 
 

 

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©2015 Dave Mason ASTROPHOTOGRAPHY