Dragged Sun – Large Solar Prominence and a Swirling Eruptive Flame in a Stacked Motion – Color vs BW

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Captured on Jan 17, 2021, from Dark Sky® Alqueva region, Portugal, with a Solar Ha telescope – at the wavelength of Hydrogen-Alpha, the high-resolution image shows a gigantic solar prominence. Seen in Color and Black and White version, the image feature a stacked scene comprising 1h30 minutes of solar motion with dragged prominences visible in great detail around the sun´s limb due to an exceptional seeing conditions (very good atmospheric stability). The sequence of close-up captures were taken between UT 12h56 and UT 14h24 (Universal Time) to help reveal very interesting changes in shape, intensity and detail, with spicules and supergranulation in motion on the sun´s surface, as well as spicules and minor eruptive prominences appearing around the limb´s disc. The still single images and time lapse video also highlights a spectacular fast swirling eruptive prominence visible in the upper right edge, while not faraway, a nice plume of fire was flown up and vanished as a smoke ring. To enjoy the time lapse and still photos of this dragged version, click here.

PT: Captada a 17 de Janeiro 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 revela uma gigantesca promeminência solar. Apresentada numa versão a cores e a preto e branco, a imagem é o resultado de um stack que compreende 1h30 minutos de movimento solar com o arrastamento das protuberâncias, vistas em grande detalhe ao redor do limbo solar, graças a condições de seeing excepcionais (excelente estabilidade atmosférica). A sequência de captações em close-up foi feita entre UT 12h56 e UT 14h24 (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 eruptivas aparecendo ao redor do limbo. As imagens singulares estáticas e o vídeo time lapse também destacam uma espetacular proeminência eruptiva em forma de espiral e que faz um redemoinho rápido visível no extremo superior direito,  não muito distante, é ainda possível ver uma pluma de fogo erguer-se e desvanecer como um “anel de fumo”. Para desfrutar do vídeo time lapse e das imagens estáticas resultantes desta versão arrastada, clique aqui.


Below – from right to left – is possible to appreciate a portrait of a singular shot taken at UT 13h07, and the BW and Color version of a stacked sequence comprising 1h30 minutes of solar motion with dragged prominences.

PT: Em baixo – da direita para a esquerda, é possível apreciar uma versão estática de uma imagem singular em modo retrato, captada às 13h07 (UT) e uma imagem a preto e branco e a cores, resultado de um stack em sequência que compreende 1h30 minutos de movimento solar com o arrastamento das protuberâncias. 



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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