Prominence

 

It was partly cloudy and I took the opportunity to look through the solar telescope between the clouds and saw a nice prominence on the edge of the sun. I managed to take a photo before it got cloudy. The prominence is bigger than our planet Earth, a beautiful sight!

Bright NLC in moonlight

Looked out the living room window and saw bright noctilucent clouds low in the sky. Packed up cameras etc and jumped in the car and drove off. Chose a place with a low horizon in the north and easy to bring the equipment from the car. When I have just started preparing for the photo I hear steps in the dark and turn on the headlamp and also see a pair of eyes in the dark. After a while I see that it is a deer buck coming straight towards me. He comes very close and looks at me before he heads off, a powerful meeting in the dark.

In the sky the noctilucent clouds are low in the north but they are very bright and beautiful. The moon is up and creates nice moonlight over the landscape. Choose to do some timelapses and macro/widefield pictures, a nice night and the darkness is on its way back.

 

The Sun

 

Sunny days and the sun shows several sunspots and prominences. The images were taken with Ha and CaK filters, different wavelengths.

 

A CaK filter (Calcium K-line filter) is a specialized solar filter for telescopes that isolates light at a specific wavelength of 393.3 nm in the deep violet/near ultraviolet (UV) spectrum. The filter is used in astronomy to observe and photograph the sun, as it makes the lower chromosphere and the border region with the photosphere visible.

 

H-alpha solar filterH-alpha solar filterA H-alpha (Hydrogen-alpha) solar filter is a specialized and advanced optical system that isolates an extremely narrow light wavelength of 656.28 nanometers (nm), which makes it possible to safely observe the sun's chromosphere. Unlike regular white light solar filters, an H-alpha solar filter shows dramatic details such as prominences (gas clouds ejected from the edge), filaments, sunspots and solar flares.