This evening, gloriously bruised skies created a twilight ponder. Twilight struck with realization most of us take her mesmerizing palette for granted. Far from a cosmic constant, twilight requires atmosphere to scatter rays of light in advance and conclusion of a visible Sun above the horizon.
Civil twilight falls when the sun is 6 degrees below the horizon. In the morning this is known as dawn, in the evening, dusk. This is the limit at which twilight illumination is sufficient, under good weather conditions, for terrestrial objects to be clearly distinguished; at the beginning of morning civil twilight, or end of evening civil twilight, the horizon is clearly defined and the brightest stars are visible under good atmospheric conditions in the absence of moonlight or other illumination. In the morning before the beginning of civil twilight and in the evening after the end of civil twilight, artificial illumination is normally required to carry on ordinary outdoor activities.
Nautical twilight begins when the Sun is 12 degrees below the horizon. At the beginning or end of nautical twilight, under good atmospheric conditions and in the absence of other illumination, general outlines of ground objects may be distinguishable, but detailed outdoor operations are not possible, and the horizon is indistinct.
Astronomical twilight defines a Sun 18 degrees below the horizon. Before the beginning of astronomical twilight in the morning and after the end of astronomical twilight in the evening the Sun does not contribute to sky illumination; for a considerable interval after the beginning of morning twilight and before the end of evening twilight, sky illumination is so faint that it is practically imperceptible.
Civil, nautical, astronomical, three clearly defined twilights that forgot to mention – twilight is also a colour, emotion and source of cosmic wonder unique to our planet.
From Adrien Mauduit at the Aurora observatory, Senja Island, Norway on March 17, 2019…
“It all started at around 10:00pm LT. Almost nothing until then when all of a sudden a big band appeared in the south. Around 10:30pm LT, a very nice show happened with some colorful and fast moving coronas.”
Adrien Mauduit is a visionary, an artist who captures the essence of Aurora in mesmerizing detail. Join me in appreciation of his vision by clicking on the link below and following Adrien Mauduit.
To the delight of Aurora watchers Earth’s magnetic field vibrates in protest of unrelenting solar wind. An Earth facing hole of monstrous proportion opened on the Sun, belching winds of 600 Km/second (that’s almost 1.2 mph ) toward our planet. Defensive vibrating twists in Earth’s magnetic field ignited powerful geomagnetic storms.
Astronomers predict intense aurora activity to continue for several days.
The current auroral oval commands the Northern Hemisphere. Anyone living under the oval owes it to themselves to look up under clear dark skies. Those lucky enough to meet Aurora, embrace her stamp of indelible wonder. She’s waiting – all you have to do is find her.
Its been a while since space weather graced this blog, far too long if you ask me. With that in mind, ponder a Sunday night space weather update.
As I write solar wind blows at 354.8 km/second, 1,967 potentially hazardous asteroids are identified within 100 LD (lunar distance) from our planet and 2 observable fireballs have been recorded in the past 24 hours. Despite a lull in solar activity courtesy cyclical expectations of solar minimum, a behemoth Earth facing hole in the Sun’s surface catapults solar wind in our direction. Contact with Earth’s magnetic field is anticipated on February 19 or 20th. Aurora watchers can expect geomagnetic storms.
On Monday February 18, Sirius, the brightest star in our night sky will be eclipsed by asteroid 4388 Jurgenstock (https://en.wikipedia.org/wiki/4388_Jürgenstock)
In sharp contrast to February 2018 which came and went without a full moon, February 19, 2018 delivers a supermoon designated the closest full moon of the year.
Few people know what space weather is, let alone grasp how it impacts life on Earth. If you were a passenger on NetJets flight 795 from White Plains to Burbank last week, you received a radiation dose of x 68.4 that of radiation exposure at sea level. Space weather is real and it matters. Happy Sunday.
Adrien Mauduit, my favorite timelapse photographer, posted Winter Wonderland a few days ago. Shot over three months in Senja, Norway, no one better than Adrien to preface a Winter Wonderland….
“Within the arctic circle the winters can be harsh with long-lasting violent blizzards. However when the snow storm lets up and passes, it leaves a completely transformed landscape. All the familiar roads, trees, mountains and lakes are buried under a layer of deep snow taking on different sort of weird shapes. The flimsy birch trees are bending under the weight and look like they are welcoming your into a fairy-tale. The moon and the windless atmosphere play such an important role in creating a winter wonderland. Most of the sequences of this short timelapse film were shot during an interval of 3 days where the snow stuck to the branches. Senja’s ever-changing weather had the best of this fleeting environment very quickly but it took over 3 months to shoot all the scenes of this movie.
I really wanted the viewer to feel like they actually were in a dream straight from their winter childhood memory. Much like Narnia or Frozen you can just walk through the enchanted frozen forest, lie down in the scintillating fresh powder looking up at the branches contrasting with the blue sky and the northern lights, and all surrounded by the mountains and the sea. From the pink sunrises and sunsets of the winter polar days to the ice figures created on the frozen shore by the converging tides, not to mention the incredibly colorful displays of aurora borealis, get ready to experience an uplifting voyage through the magical astroscapes of Northern Norway.
All was shot with the Sony a7rII, Sony a7s and the Canon 6D Baader modified and a variety of bright lenses ranging from 14mm to 150mm. I used the Lonely Speck Pure Night and Matt Aust Light pollution filters to reduce light pollution and increase details on the deep-sky scenes and also the Vixen Polarie to track the stars and get cleaner shots. For motion control I used the Syrp 3-axis Genie I system and also the Vixen Polarie. All post production was made in Lr with the special timelapse plus plugin, Sequence for mac, TLDF, and final production was made in FCPX. I hope you like the movie as much as I liked shooting and processing it and I thank everyone of you for your support. All content is of course copyrighted AMP&F (except sountrack licensed through The Musicbed: Steven Gutheinz with ‘In the Balance’), and no footage can be used in any way without the author’s permission. Please contact me for media and purchase inquiry. Please share and comment if you liked the video and follow me for more videos like this one! More at adphotography-online.com.” – Adrien Mauduit
Follow Adrien Mauduit at – https://www.youtube.com/channel/UCC0CLzCpM6nuLSAi1JNBjkA
Transient – mesmerizing, primal, inspirational, humbling, freaking incredible. Filmmaker /photographer Dustin Farrel spent the summer of 2017 traveling 20,000 miles around the United States of America capturing lightening strikes at 1,000 frames per second.
“There is peace even in the storm” – Vincent Van Gogh
Involuntary elation is a thing of beauty. We all harbor exhilaration triggers, a uniquely personal, undeniably human emotional response to unexpected experiences. One of my earliest childhood memories is an emotional response to severe weather. A oppressively hot summer afternoon dotted with ritual counting of seconds between lightening strike and thunderous percussion. Inclement perfection culminating in the mother of all thunderstorms. To this day every hair on my body stands in awe of stormy punctuation.