Large Prominence and Chromosphere in Motion – Solar Session from 19th Sept 2021 With Photos and Time Lapse
Alqueva´s Dark Sky Reserve | By Year: 2021 | Solar Ha | The Sun Star | Time Lapses Photography
Captured on September 19th, 2021, from Dark Sky® Alqueva region, Portugal, with a telescope equipped with a Daystar Quark filter at the wavelength of Hydrogen-Alpha, the high-resolution image features a wonderful solar prominence visible in great detail around the sun’s limb. Due to a good atmospheric conditions and stability, it was possible to record a nice time lapse video sequence taken between UT 11h32 and UT 12h51 (Universal Time) to help reveal all the solar dynamics and activity in motion. It’s possible to see a lot of interesting changes in the shape of prominence structures, as well as, fine spicules surrounding the solar disc and some slower motion in the chromosphere of the sun (surface). The images also captured minor and fast eruptive prominences appearing around the limb’s disc. The video zoomed to a crop close-up into some sequences to highlights the spectacularity and details in the solar activity. I edited the time lapse with music to be more immersive while enjoying, but you can switch of the sound, to be less distractive and notice better what is going on.
PT: Captada a 19 de Setembro de 2021, a partir da região do Dark Sky® Alqueva, Portugal, com um telescópio equipado com um filtro solar Daystar Quark – no comprimento de onda do Hidrogénio Alfa, a imagem de alta resolução apresenta uma incrível promeminência solar visível em grande detalhe ao redor do limbo do sol. Devido a boas condições atmosféricas e de estabilidade, foi possível registar uma sequência time lapse captada entre UT 11h32 e UT 12h51 (Tempo Universal) para ajudar a revelar toda a dinâmica solar e actividade em movimento. É possível ver muitas mudanças interessantes na forma e estrutura das proeminência, bem como espículas finais e aguçadas que aparecem ao redor do disco solar, assim como algum movimento mais lento na cromosfera do sol (superfície). As imagens também captaram proeminências eruptivas menores e rápidas aparecendo ao redor do limbo. O vídeo faz um zoom-in nalguns trechos, para permitir em close-up destacar a espetacularidade da actividade solar. Eu editei o timelapse com música para ser mais envolvente enquanto o leitor desfruta, mas pode desligar o som, para ser menos distrativo e permitir assim apreciar melhor os detalhes.
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. All the images have been captured at different times, over the course of 1h20m.
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. Todas as imagens foram captadas em minutos diferentes, no decorrer de 1h20m.
Below is possible to watch the video time lapse compiling 135 shots processed, each one as result of a stack of the best 250 frames from each raw video. The final result is a 3K high resolution time lapse movie comprising 1h20 of images.
PT: Em baixo é possível ver o vídeo time lapse compilando 135 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 3K que compila 1h20 de imagens.
Technical details | Detalhes Técnicos
SW Esprit 120ED Professional | EQ-6 Pro mount | Daystar Quark Chromosphere filter| ASI174MM | ZWO EAF | Stack of 250 frames for each single image, captured in good seeing conditions (average of 1,22 ” arcs) from Dark Sky® Alqueva territory, Portugal.
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