Category Archives: Sun

Aurora

At last, I’ve seen the Northern Lights. A short break in Tromsø and despite a slightly iffy weather forecast the first night we took a tour out off the city. Weather was forecast to be best over Kvaløya so that was the direction we headed and the clouds started to thin after we’d travelled a few miles. This was probably the brightest but I’ve still got some more pictures to process.

_MG_2873

Sun spots

The current active phase of the Sun continues apace with another large sunspot group crossing the face of the sun over the last few days.  I took this picture yesterday just before sunset which shows AR1520, the large grouping at the top of the picture with 1519 & 1521 the two at the very bottom.

Edit:At 16:53 UT on the 12th Jul sunspot AR1520 unleashed an X class solar flare in the direction of Earth. http://www.spaceweather.com has further details.

More sun watching

A break occurred in the clouds just before sunset on friday so I took the opportunity to image the large sunspot group currently crossing the face of the sun. My front porch has a reasonable gap between the trees so I setup the Zenithstar on the Astrotrac and attached the Canon 350D.

Zenithstar 70 on Astrotrac

I stacked about 40 images from the Canon. Individual exposures were 0.003 seconds at ISO 100. The focal length is 420mm.