Comet Leonard Featuring a Bright Greenish Coma and a Long Dusty Tail

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The image shows a close-up view of Comet Leonard c/2021 A1 featuring a wonderful greenish coma and a long dusty tail, visible at Dawn on 5th December 2021 from Dark Sky® Alqueva observatory, Portugal. While seems to move fast against the background starry sky, the frame shows comet Leonard with a magnitude of 5.9 pointing in the direction of double star d Bootis, the brightest one visible near the corner. During this month, the Comet is expected to reach a naked eye magnitude.

PT: A imagem revela uma visão aproximada do cometa Leonard c/2021 A1 exibindo um incrível coma esverdeado e uma longa cauda empoeirada, captada ao amanhecer no passado dia 5 de Dezembro de 2021, a partir do Observatório do Dark Sky® Alqueva, na Cumeada. Enquanto este vagueante longíquo do sistema solar se move rapidamente contra o céu estrelado de fundo, a imagem estática revela no enquadramento o cometa Leonard com uma magnitude de 5,9 enquanto aparenta apontar na direção da estrela dupla d Bootis, a estrela mais brilhante visível no extremidade da imagem. Durante este mês de Dezembro, o Cometa poderá vir a atingir uma magnitude visível a olho.

Technical details | Detalhes Técnicos

Taka FSQ-106ED + Extender-Q 1.6x – EM200 auto-guided | Nikon D850 | ISO3200 – Exp. 120 seconds x 60 lights | Total integration: 120 minutes = 2 hours. Processing on PixInsight 1.8.8-10 and Photoshop CC 2022. Cumeada Observatory from Dark Sky® Alqueva Reserve, Reguengos de Monsaraz.


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