Coronal Mass Ejection and Earth's magnetic fields

Illustration of a CME from the Sun’s surface in the direction of Earth. The blue waves around the Earth’s poles represent it's magnetic field lines. The CME and it's magnetic cloud of plasma can extend to 45 million km wide by the time they reach Earth. These CME storms can disrupt communications and navigational equipment, damage satellites, and even cause electrical blackouts; and this is the science of Space Weather.

OpenLearn Astronomy with an online telescope

My second course on OpenLearn from the The Open University : Astronomy with an online telescope. I was able to complete the course succesfully and getting my first badge.

M42 with COAST telescope (RGB, Clear & OIII)

Final compilation of Orion Nebula M42 pictures with COAST C14 f/11 telescope in Tenerife. Settings : 180s Clear filter, 180s RGB and 180s OIII. PNG pictures are edited using CS4. The 4 stars in the center of M42, the Trapezium, is clearly visible.

Whirlpool Galaxy M51 with COAST - Comparison with TAL200K

Picture of Whirlpool Galaxy, Messier M51, with COAST C14 f/11 telescoop in Tenerife. Exposure time 180s without filters.

To compare I added my picture of M51, taken with Nikon D7500 on TAL200K f/8.5 with settings ISO12800 and 18minutes exposure time. Raw data converted to DNG and editing using CS4. The COAST picture format is PNG and final editing aswell with CS4.

Helping Science - Val U Sun

It's always nice to help science. This time it was about calibrating old solar drawings in view of digitazing them.

Orion Nebula with COAST Telescope - Color

A combination of RGB and Clear picture from Orion Nebula, M42, with COAST C14 f/11 telescope on Tenerife.

Orion Nebula with COAST Telescope on Tenerife

Orion Nebula, Messier M42, with COAST Telescope C14 f/11 on Tenerife. This time without filters (Clear) and exposure time of 180s. The picture was edited within telescope.org and the picture was downloaded in png. Final editing with CS4.