Solar Time Lapse of a Great Prominence Releasing a CME into Space on 10Th July 2022
Alqueva´s Dark Sky Reserve | By Year: 2022 | Solar Ha | Time Lapses Photography
On 10th July, 2022, the Sun has featured a gigantic solar prominence over the chromosphere, throwing a coronal mass ejection (CME) into space. Luckily I was checking the sun activity at the end of the day, as normally I don’t photograph the sun so late, specially for being low and close to the horizon. As soon as I realised that a huge prominence was visible and growing so fast and drastically, I quickly start shooting. Seeing forecast was amazing around 0,71″ arc. but the sun was lower than ideal and the atmosphere had a fine layer of dust coming from Africa. The temperature was very high, around 38º at 18h00. So I made a huge effort of gathering as much images as possible. The sequence was captured between UT17h37 and UT18h30 and shows spectacular motion of the CME. The gradual change in contrast in the solar disc, is related with the sun getting lower and crossing the dust layer which scattered the light even more. The final result is a 4K high resolution solar movie (at the end of this page) comprising around 1hour of images, captured from the Dark Sky® Alqueva region, Portugal. Here is the animations from NASA SDO and LASCO-c2 (Cactus CME detection) from this same day, showing the same giant as seen from the probe in Space. It is impressive the motion of the prominence in the time lapse, which seems to end up swirling like a tornado
PT: Em 10 de Julho de 2022, o Sol apresentou uma proeminência solar gigantesca sobre a cromosfera, lançando uma ejeção de massa coronal (CME) no espaço. Por sorte, fui verificar a atividade solar no final do dia, visto que normalmente não fotografo o sol tão tarde, principalmente por estar baixo e próximo ao horizonte. Assim que percebi que uma enorme proeminência estava visível e crescia drasticamente, comecei prontamente a fotografar. A previsão do seeing (estabilidade atmosférica) era incrível, cerca de 0,71″ segundos de arco, mas o sol estava mais baixo do que seria ideal e a atmosfera tinha uma fina camada de poeira vinda de África. A temperatura estava muito alta neste dia, em torno dos 38º às 18h00. Assim, fiz um esforço para captar o máximo de imagens possível. A sequência foi captada entre as UT17h37 e UT18h30 e mostra o movimento espetacular da CME. A mudança gradual no contraste no disco solar, está relacionada com o facto do sol se ir aproximando do horizonte e atravessando uma camada de poeira fina que dispersou ainda mais a luz . O resultado final é um filme solar 4K de alta resolução (ver final desta página) com cerca de 1 hora de imagens, captadas na região de Dark Sky® Alqueva, Portugal. Aqui poderá ver uma animação da NASA SDO e LASCO-c2 (Cactus CME detection) deste mesmo dia, mostrando a mesma proeminência e CME vista da sonda que se encontra no espaço. É impressionante o movimento da proeminência no final do time lapse, que parece acabar girando como um tornado.
Above are some still shots captured at different times during the sequence and presented in color and monochromatic version, intended to help conduct the reader attention to the most interesting parts of the image.
PT: Acima estão algumas fotos captadas em diferentes tempos durante a sequência, mostrando a evolução da proeminência. As imagens estão apresentadas em uma versão a cores e monocromática, com o objetivo intencional de ajudar a conduzir a atenção do leitor para as partes mais interessantes da imagem.
Above is possible to watch the video time lapse sequence compiling 200 shots processed, each one as result of a stack of the best 200 frames from each raw video. The final result is a 4K high resolution time lapse movie comprising around 1 hour.
PT: Acima é possível ver o vídeo time lapse compilando 200 captações processadas, cada uma como resultado de um stack dos melhores 200 frames de cada vídeo raw. O resultado final é um filme time lapse de alta resolução de 4K que condensa cerca de 1h de imagens.
Technical details | Detalhes Técnicos
SW Esprit 120ED Professional | EQ-6 Pro mount | Daystar Quark Chromosphere filter| Player One Apollo-M Max |Focuser Sesto Senso 2 | Stack of 200 frames for each single image, captured in average to good seeing conditions from Dark Sky® Alqueva territory, Portugal.
Important Note | Nota Importante: Never look and point a telescope or any other optical equipment directly to the sun without a proper and specialized safty filters! It can blind you forever. PT: Nota Importante – Nunca aponte um telescópio ou qualquer equipamento óptico directamente para o sol e observe através dele sem filtros especializados e seguros. Causará cegueira irreversível!
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