celestron

The Sun today

Sun today. I edited the picture to better show some surface structures on the Sun. It makes the sunspots a bit dark. C8, primary focus, Nikon D90 and 1/1000″ exposure time.  


Sunspots today

Today’s sunspots. Taken at 17:22 CEST (15:22 UT) Utrecht. Celestron C8 (F/10) primary focus with a Nikon D90 at 1/250″ speed, ISO 800. Baader solar filter. Click on the picture for the full size version….