A Cloud of Fire Floating Above the Chromosphere and AR12887 Releasing a C1.1 Flare – Time Lapse and Photos
Alqueva´s Dark Sky Reserve | By Year: 2021 | Solar Ha | Time Lapses Photography
Captured on October 27th, 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 some solar prominence around the sun’s limb near the Active Region AR12891, as well as a cloud of fire which seems to float above the limb for a long time. To help reveal all the solar dynamics and activity in motion, I made a time lapse video sequence taken between UT 11h55 and UT 14h13 (Universal Time). 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 ending with a close-up of AR12887, an Active Region which has been releasing during a few days several flares from C-1 to X-1 class. I was fortunate to capture one of these minor flares, a C1.1 class registered at UT13h35 which last for 13 minutes. It can be seen as a sudden “burning white” area appearing around the AR12887 sunspot.
PT: Captada a 27 de Outubro de 2021, a partir da região do Dark Sky® Alqueva, Portugal, com um telescópio equipado com um filtro Daystar Quark no comprimento de onda do Hidrogénio Alfa, a imagem de alta resolução apresenta algumas proeminências ao redor do limbo do sol, perto da região activa AR12891, bem como uma nuvem de fogo que parece flutuar sobre o limbo por um longo periodo de tempo. Para ajudar a revelar toda a dinâmica solar e atividade em movimento, fiz uma sequência de vídeo time lapse captada entre UT 11h55 e UT 14h13 (Tempo Universal). É possível ver muitas mudanças interessantes na forma das estruturas de proeminência, bem como, finas espículas ao redor do disco solar e algum movimento mais lento na cromosfera do sol (superfície). As imagens também captaram proeminências eruptivas menores e rápidas aparecendo ao redor do disco. O vídeo faz um zoom-in nalguns trechos, para permitir em close-up destacar a espetacularidade da actividade solar, terminando com um close-up da AR12887, uma região activa que tem lançado durante alguns dias vários flares de entre classe C-1 a X -1. Tive a sorte de captar um desses flares menores, de classe C1.1 registado às UT13h35, que durou aproximadamente 13 minutos. Pode ser visto como uma área branca que repentinamente queima – te tanta luz – aparecendo ao redor da mancha solar AR12887.
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. Below is possible to see the white region related with the flare C1.1 class released around the sunspot AR12887.
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. Em baixo é possível ver a região a branco relacionada com a libertação de um flare de classe C1.1 na mancha solar AR12887
Below is possible to watch the video time lapse compiling 358 shots processed, each one as result of a stack of the best 250 frames from each raw video. The final result is a 4K high resolution time lapse movie comprising 2h18 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 4K que compila 2h18 de imagens.
Technical details | Detalhes Técnicos
SW Esprit 120ED Professional | EQ-6 Pro mount | Daystar Quark Chromosphere filter| QUY5III174M | ZWO EAF | Stack of 250 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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