The calendar for next year is ready! Once again I went through my photos to collect twelve photos of auroras and landscapes taken in Finland. Here is the front cover, photos are at the end of the post:
This could be a great present for friends, family or for your office. Looking for a Christmas present? Why not surprise them with a calendar!
Details of the calendar and order information can be found here:
This week I was out with my camera to catch the first auroras of the season. While the aurora was still faint due to the long summer nights, I saw finally some noctilucent clouds for the very first time. It was an electric sight, seeing those clouds lighting up the sky. Here are some facts I picked up from wikipedia:
Noctilucent clouds are visible in deep twilight only, when sunlight is illuminating the tiny crystals of water ice from below the horizon. This happens only when the sun is somewhere between -6° and -16°. Located in the mesosphere at altitudes of around 80 kilometres, NLCs are the highest clouds in Earth’s atmosphere. Noctilucent roughly means ‘night shining’ in Latin.”
Seems I ran into winter blues in the middle of July, strange thing. And yet, not really – for me. Choosing between -20C and +30C is a no-brainer :) I love the crisp air, the white snow and of course Northern lights in clear nights.
The photo below was taken in Lapland just before sunrise last February. There might be a few things it you may have stared at but never heard of. The pink band on the horizon is called the ‘Belt of Venus’. Its “rosy pinkish arch is visible long after sunset or long before sunrise by backscattering or refracted sunlight due to fine dust particles high up in the atmosphere” (1). The color is a mix of “backscattered sunlight reddened by the atmosphere and the deep blue of the anti-sunward sky”(2).
Below the Belt of Venus is a dark bluish band called ‘Earth’s Shadow’. The name here is rather self-explanatory as it stands “for the shadow that the Earth itself casts on its atmosphere. This shadow is often visible from the surface of the Earth, as a dark band in the sky near the horizon”(3).
Next time you are out around sunset / sunrise time, check out the sky opposite from the sun. You may see familiar phenomena in the lower sky :)