Burning Like the Wing of an Angel – Solar Timelapse and Photos
Alqueva´s Dark Sky Reserve | By Year: 2022 | Solar Ha | Time Lapses Photography
Captured on 13th January, 2022, from Dark Sky® Alqueva region, Portugal, a high-resolution image featured as a coronagraph, shows a large but very very faint solar prominence dancing around the sun’s limb. It was barely visible with the chromosphere filter, but I realised that it was vertical, enormous and beautiful, a burning shape resembling the wing of an angel. So, I decide to switch to the Quark filter dedicated to Prominences and get the most of it, with an overexposed disc to help reveal all the details on its structure. By my calculations and in comparison with the pixel measurements on the image, it must be around 96.000 km in height, which means around 7,5x the size of our planet Earth. As the weather conditions were stable enough, I did a time lapse sequence compiling 223 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 2 hours.
PT: Captada a 13 de Janeiro de 2022, na região do Dark Sky® Alqueva, Portugal, a imagem de alta resolução apresentada como “coronógrafo”, mostra uma proeminência solar grande, mas muito fraca, dançando ao redor do limbo solar. Era praticamente imperceptível com o filtro de cromosfera, mas conseguia-se vislumbrar a sua grandeza, imponência e verticalidade, com a forma ardente de uma asa de anjo em chamas. Assim, decidi mudar para o filtro Quark dedicado às Proeminências no sentido de tirar o máximo proveito dele, com um disco sobre-exposto para ajudar a revelar todos os detalhes da sua estrutura. Pelos meus cálculos e em comparação com as medições dos pixeis na imagem, a proeminência deverá ter cerca de 96.000 km de altura, o que significa cerca de 7,5x o tamanho do nosso planeta Terra, com 12.742 km de diâmetro. Como as condições climáticas estavam estáveis o suficiente, fiz uma sequência time lapse compilando 223 fotos processadas, cada uma como resultado de um stack dos melhores 200 frames de cada vídeo raw. O resultado final é um filme de alta resolução em 4K que compilar cerca de 2 horas.
Below and above are some still shots presented in a portrait, landscape, or monochromatic version, intended to help conduct the reader attention to the most interesting parts of the image.
PT: Em baixo e acima estão algumas fotos apresentadas em uma versão retrato e paisagem, bem como em uma versão monocromática, com o objetivo intencional de ajudar a conduzir a atenção do leitor para as partes mais interessantes da imagem.
Below is possible to watch the video time lapse sequence compiling 223 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 2 hours.
PT: Em baixo é possível ver o vídeo time lapse compilando 223 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 2h de imagens.
Technical details | Detalhes Técnicos
SW Esprit 120ED Professional | EQ-6 Pro mount | Daystar Quark Prominence filter| QUY5III174M | Focuser Sesto Senso 2 | Stack of 200 frames for each single image, captured in good seeing conditions (average of 1,60″ arcs) 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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