Beautiful sundog

This evening, low at the sky, a beautiful sundog or phantom sun could be observed.

Phantom sun with on the low-left the top of a balloon.

The sun on the right, the phantom sun on the left. 

Observing the sun on July 5th 2015

On July 5th, 2015, the Flanders region will organize activities to observing the sun.
See also http://www.vvs.be/subsite/zonnekijkdag/ontdek-onze-zon-op-5-juli-2015
I will keep you informed.

Moon 92%

Two days after full moon...

Meteorites under microscope

Helios Astronomy club was invited by one of it's members Lieven - thanks for the nice invitation. On the agenda today, observing meteorites under the microscope. Jan brought along his meteorites collection  - a mars meterorite, a iron meteorite and a rock sample impacted by a meteorite.

The Science behind gravitational lensing by spinning black holes

Astrophysics of the accretion disk shown around spinning black holes is explained in this movie  Gravitational lensing by spinning black holes - see also http:\\www.orionxt12.blogspot.com

Avg and extremes for April 2015

Weather results for April 2015 - Averbode. April counted 25 days without rain (17mm). 

Light Grafitti

Settings for taking astronomical pictures at typically require long exposures, large aperture and high ISO. When setting your camera to a small aperture, still using long exposure time and high ISO you are able to take some nice light grafitti pictures - See http:\\www.orionxt12.blogspot.com

Light Grafitti -  Car lights in Berlin