Portrait of a Great Solar Prominence
Alqueva´s Dark Sky Reserve | By Year: 2020 | Solar Ha
Captured on May 25, 2020, from my backyard near Dark Sky® Alqueva region, Portugal, around UT 14:42 with a Solar Ha telescope – at the wavelength of Hydrogen-Alpha, the high-resolution image features a gigantic solar prominence visible in great detail around the sun´s limb due to an exceptional seeing conditions (very good atmospheric stability). As in average the solar disc has a diameter of 1,391,000 km, we can determine that the large prominence could reach around 83,000 km high, which means 6,5 times larger than our planet Earth with a diameter of 12,742 km. To see the full report sequence, with full disc image and time laspe video, click here.
PT: Captada em 25 de maio de 2020, a partir do meu terraço perto da região do Dark Sky® Alqueva, Portugal, às 14:42 (UT) 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). Como em média o disco solar tem um diâmetro de cerca de 1.391.000 km, podemos determinar que esta proeminência é de facto gigante podendo atingir cerca de 83.000 km de altura, o que significa 6,5 vezes maior que o nosso próprio planeta Terra com um diâmetro de 12.742 km. Para ver o report completo, com o disco solar integral e uma sequência vídeo em time lapse, clique aqui.
Technical details | Detalhes Técnicos
LUNT LS100T Ha | AZ-HEQ5GT | ASI178MC | 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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