A Full Disc Sun Reveals Gigantic Filaments against the Solar Chromosphere


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Captured on 11th July, 2022, at UT 13h49 from Dark Sky® Alqueva region, Portugal, a high-resolution mosaic of the Sun is featuring a very active chromosphere full of large filaments, some of them are so big, that can probably reach the size of Saturn’s ring system – which means – dozens of planet Earths. Some sunspots are also visible in the inverted Ha image, with Active Region 3053 – visible in the upper center – featuring an arched prominence, also called filament, for being visible from above and against the solar disc. As the Sun is rotating some of these filaments will then turn into prominences as we normally call it, while they will be seen around the solar limb.

PT: Captada a 11 de julho de 2022, às 13h49 UT a partir da região do Dark Sky® Alqueva, Portugal, um mosaico de alta resolução do Sol apresenta uma cromosfera muito ativa e cheia de filamentos gigantescos, alguns destes tão grandes que provavelmente poderiam atingir o tamanho do sistema de anéis de Saturno, ou seja, dezenas de vezes o tamanho do planeta Terra. Algumas manchas solares também são visíveis na imagem H-alfa invertida, com a Região Activa 3053 – visível no centro superior – apresentando uma proeminência arqueada, também chamada de filamento, por ser vista de cima e contra o disco solar. À medida que o sol for girando, os filamentos que persistirem passarão a ser designados de proeminências, como normalmente lhes chamamos, enquanto são visíveis ao redor do limbo solar.

Technical details | Detalhes Técnicos

William Optics ED80 | EQ-6 Pro mount | Daystar Quark Chromosphere filter| Camera Player One Apollo-M Max| Focuser Sesto Senso 2 | Mosaic of 7 panels with a stack of 200 frames for each single image. Captured in average seeing conditions from Dark Sky® Alqueva territory, Portugal.

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