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Ursa Astronomical Association
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Ursa Astronomical Association

Half-sky auroras - 13.3.2022 at 20.00 - 14.3.2022 at 02.45 Kouvola Observation number 106023

Visibility IV / V

Tero Sipinen, Ursa (Etelä-Suomi)

This was an exceptional northern lights show because I didn’t miss the early evening show. Usually I only get moving sometime closer to midnight (if even then), but now I’m already at eight in the terrain. And there the belt was already twisting in the sky. I immediately took a picture from the base of the observation hill (picture 1, 20.00) that it just doesn’t happen that the show freezes when climbing up the slope. Even though I once pretended to be on time, I was still twenty minutes late based on the Nurmijärvi graph. Not after a couple of hours, as usual. In addition to the green belt, I noticed a gray, wide "cloud" high in the sky, which was also exposed to northern lights, aided by the camera's better color vision (Figure 2, 20.01). A full sky image taken from the top of the hill showed that the gauze was already clearly extending to the right side of the zenith (Fig. 3, 20.08). On the 14-millimeter, I photographed a series of wrinkled belts (Fig. 4, 20.16-20.42) and occasionally halos on the Moon. The activity waned and when not even a pinch promised a new Show, I took the stuff and left home just before ten. In terms of conditions, it would have been possible to linger even longer when there were only a couple of degrees below zero and a fairly good supply.

Over the course of the night, the curves began to reveal so many dramatic readings (on the right side of the Bz -20) that new booze had to be boiled in the thermar and left again for the passport. I was at the second gig at the foot of the same hill about 0.40 and even now I had a wrinkled belt. While waiting for more action, I clicked six vertical images for the panorama (Figure 5, 0.52). After that, I optimistically started the full sky shooting and stayed to follow the climbing belt higher and higher. At 1.32 I noticed that the belts in the zenith began to move remarkably vividly and after that almost the whole sky fluttered in full green motion. Even the crown didn't really look like a crown when it was so wide. After the show calmed down, I noticed that first the southern hem of the repo quilted quickly and later the north side swept very quickly - in a second or less - colorless waves from the sky to the zenith, i.e. flaming repos. Quite too clever a phenomenon to record with your own equipment. Weaving timelapse from 0.59-2.40. (Same in larger size: ). After that, I left home as the flare continued. It was a great show again, although with the naked eye I saw nothing but green. Yes, the pictures didn't stick to the colors very doubly.

More similar observations
Additional information
  • Aurora brightness
    • Bright auroras
  • Observed aurora forms
    • Arc info

      ARC The arcs are wider than the bands and do not fold as strongly. The arcs are normally neither very bright nor active.

      The arc is probably the most common form of aurora. When aurora show is a calm arc in the low northern sky it often doesn’t evolve to anything more during night. In more active shows the arc is often the first form to appear and the last to disappear.

      The lower edge of the arc is usually sharp but the upper edge can gradually blend into the background sky. As activity increases rays and folds normally develop, and the arcs turn gradually into bands.

      An aurora arc runs across the picture. Vertical shapes are rays. Photo by Atacan Ergin.

      Aurora Arc. Photo by Mauri Korpi.

      Aurora Arc. Photo by Anna-Liisa Sarajärvi.

      Aurora Arc. Photo by Matti Asumalahti.

    • Corona info

      CoronaA corona is a hand fan shaped structure, it usually forms south of the observer's zenith, most commonly consisting of rays or bands. The corona is usually the most beautiful part of the aurora show. It is bright and active, but on the other hand also short-lived.

      Aurora corona. Photo by Anna-Liisa Sarajärvi.

      Aurora corona. Photo by Merja Ruotsalainen.

      Corona formed from bands. Photo by Markku Ruonala.

      Aurora corona. Photo by Tapio Koski.

    • Band info

      Bands are usually narrower, more twisty at the bottom, brighter, and more active than arches. Bands usually develop from arches.

      Bands can form J and U shapes, sometimes even full spirals. The corona can also arise from bands. Bands are a fairly common form of aurora.

      Aurora band. Photo by Merja Ruotsalainen.

      Aurora band. Photo by Matias Takala.

      Aurora band. Photo by Lea Rahtu-Korpela.

      Aurora bands. Photo by Lauri Koivuluoma.

      Aurora band. Photo by Matias Takala.

    • Rays info

      The raysare parallel to the lines of force of the magnetic field, i.e. quite vertical, usually less than one degree thick light streaks. The rays can occur alone or in connection with other shapes, mainly with arcs and bands. Short rays are usually brightest at the bottom but dim quickly. The longest rays, even extending almost from the horizon to the zenith, are usually uniformly bright and quite calm, and unlike the shorter rays, most often occur in groups of a few rays or alone. Rays, like bands, are a very typical form of aurora.

      Artificial light pillars, which are a halo phenomenon visible in ice mist, can sometimes be very similar to the rays of aurora. Confusion is possible especially when the lamps that cause the artificial light pillars are far away and not visible behind buildings or the forest. The nature of the phenomenon is clear at least from the photographs.

      Rays. Picture of Tom Eklund.

      Rays. Photo by Mika Puurula.

      Two beams rise from the aurora veil. Photo by Anssi Mäntylä.

      Two radial bands. Show Jani Lauanne.

      Radial band and veil. Photo by Jussi Alanenpää.

      Two rays. Photo by Aki Taavitsainen.

      It may be possible to confuse such rays with artificial light columns. Compare the image below. Picture of Tom Eklund.

      There is no aurora in this image, but all the light poles - including the wide and diffuse bar seen at the top left - are artificial light pillars born of ice mist. Photo by Sami Jumppanen.

      Aurora and artificial light pillars. All the radial shapes in the picture above are probably artificial light pillars that coincide appropriately with the aurora band. In the image below, the aurora band has shifted and does not overlap with the pillars produced by the orange bulbs. There is no orange in auroras. Photo by Katariina Roiha

    • Veil info

      Veil is the most bland and very common form of aurora. It usually covers its homogeneous dim glow over a wide area of the sky at once. Most often, the veil is seen in the calmer and quiet phase of the night after the aurora maximum as a background for other forms. The veil can also occur alone and in that case it will be quite difficult to reliably identify as an aurora, especially at a observation site which has a lot of light pollution.

      A similar glow of light can also be caused by airborne moisture, smoke, or a very thin layer of clouds that reflects the light that hits them. However, clouds can also be used to identify veil, especially if the middle or upper cloud appears dark against a lighter background, then it is very likely to be aurora veil if the brightness of the background sky is not due to the rising or falling Moon or Sun. When photographing, very long exposure times usually reveal the green colour of the veil auroras.

      Veil and rays. Photo by Esa Palmi.

      Red aurora veil. Photo by Marko Mikkilä.


      Veil. Photo by Milla Myllymaa.


      Aurora veil that changes color from green at the lower edge through purple to blue at the top. Photo by Jaakko Hatanpää.


      Dim green veil. Photo by Jarmo Leskinen.


      Radial aurora band surrounded by veil. Photo by Jussi Alanenpää.

  • Colors with unaided eye and other features
    • Green auroras info

      Green, seen with the naked eye, is one the most common colors of the aurora. The green color is derived from atomic oxygen.

      Green auroras. Lea Rahtu-Korpela.

      Green auroras. Photo by Juha Ojanperä.

    • Flaming auroras info

      Flaming. This rare subclass of aurora does not mean so much a single shape, but a large area in the sky. In the flaming aurora, bright waves that are sweeping upward towards the magnetic zenith emerge in the sky. Very rarely waves can wipe downwards. Bands are usually reported during flaming, less often spots.

Comments: 4 pcs
Pirjo Koski - 7.4.2022 at 18.36 Report this

Nätit kuvat ja kiva kertomus! 

Lasse Nurminen - 7.4.2022 at 19.47 Report this

Tyylikästä lapsea! Olikos linssi huurussa, kun heittää häröviivoja kuun liki pätkän edetessä? Nimimerkillä samana yönä lisäviivoja kuvissa tuosta syystä :D.

Mikä 8-millinen muuten keulalla, näyttäisi ainakin kattavan ympäripyöreästi koko horisontin kuva-alalle?

Tero Sipinen - 7.4.2022 at 21.45 Report this

Kiitos Pirjo ja Lasse!

Se on "tasan puoli universumia" kattava Sigma 8mm F4 EX DG. Huurua en huomannut, pakkasta oli leudot 6 astetta tuolla jälkimmäisellä keikalla. Olisiko vaan ollut likainen linssi? Muistuukin mieleen kun kesäistä yötaivasta kuvatessa huomasin kuvassa viisikulmaisen tummemman alueen kuvan keskellä. Kaikenlaista haastetta tässä mallissa. Tai yksilössä. (hommattu käytettynä, Sulo Vilen -taktiikalla ja sen se on näköinenkin...)

Lasse Nurminen - 7.4.2022 at 22.15 Report this

Niin eli pelkkää flarea lienevät. Toki kuun asema muuttuu, joten lienee siitä johtuvaa että sijainti ja muoto noilla vaihtuu. Itsellä niitä häröviivoja tunki keskemmällekin kuva-alaa, mutta kyllä sitä kuuraakin oli ihan hmmm, riittävästi. Eikä pakkasta juuri enempää, toki olin sitten sieltä iltayhdeksän-kymmenen maista aina puoli kolmen nurkille siinä taivaan alla.

Itsellä Nikonin täyskennossa Samyangin croppirungoille suunnattu 8-millisen kakkosversio ja muistaakseni siinä aina jostain kantista leikkautuu kuva-alaa pois vaikka kuinka koittaa sihdata suoraan ylöspäin. Hyvinhän tuo Sigma ainakin tässä hommansa hoiti.

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