Gigantic Solar Prominence in Motion – Photo & Time Lapse
Alqueva´s Dark Sky Reserve | By Year: 2021 | Solar Ha | The Sun Star | Time Lapses Photography
Captured on March 17, 2021, from Dark Sky® Alqueva region, Portugal, with a Solar Ha telescope – at the wavelength of Hydrogen-Alpha, the high-resolution footage features a gigantic solar prominence visible in great detail around the sun´s limb due to an exceptional seeing conditions. The time lapse sequence of close-up captures were taken between UT 12h02 and UT 14h57 (Universal Time) to help reveal very interesting changes in shape, intensity and detail, with spicules and supergranulation in motion on the sun´s surface. The video also highlights in slow motion a spectacular fast eruptive prominence visible in the upper right edge.
PT: Captada a 17 de Março de 2021, a partir da região do Dark Sky® Alqueva, Portugal, com um telescópio Solar Ha – no comprimento de onda do Hidrogénio Alfa, a imagem de alta resolução apresenta uma gigantesca promeminência solar visível em grande detalhe ao redor do limbo do sol, graças a condições de seeing excepcionais (excelente estabilidade atmosférica). A sequência de captações em close-up foi feita entre UT 12h02 e UT 14h57 (Tempo Universal), para assim permitir revelar mudanças muito interessantes na forma, intensidade e detalhe, com espículas e supergranulação em movimento na superfície solar, bem como espículas e pequenas proeminências aparecendo ao redor do limbo. O vídeo também destaca em slow motion uma espetacular e rápida proeminência eruptiva visível no extremo superior direito.
Above – from left to right – is possible to appreciate a singular portrait of a still shot taken at UT 12h45, and the BW and Color version of a stacked image comprising a sequence of 2h55 minutes of solar motion with dragged prominences. To help reveal the prominence flames in motion, I made a time lapse compiling 162 shots processed, each one as result of a stack of the best 250 frames from each raw video. The final result is a 2K high resolution time lapse movie comprising 2h55 of images. Due to vimeo algorithms it may shows a little compression, which is not visible in the .mov master file.
PT: Acima – da esquerda para a direita, é possível apreciar uma versão singular estática em modo retrato, captada às 12h45 (UT) e uma imagem a preto e branco e a cores, de um stack em sequência que compreende 2h55 minutos de movimento solar com o arrastamento das protuberâncias. Para ajudar a revelar as chamas da proeminência em movimento, fiz um time lapse compilando 162 captações processadas, cada uma como resultado de um stack dos melhores 250 frames de cada vídeo raw. O resultado final é um filme time lapse de alta resolução de 2K que compila 2h55 de imagens. Devido aos algoritmos do vimeo, o video poderá mostrar alguma compressão, que não é visível no ficheiro master original .mov. Não se esqueça de colocar o som ligado.
Technical details | Detalhes Técnicos
LUNT LS100T Ha | AZ-HEQ5GT | ASI174MC | ZWO AD | Powermate 4x | Stack of 250 frames for each single image, captured in very good seeing conditions (average of 1″ arcs) from Dark Sky® Alqueva territory, Portugal.
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