Comet C/2022 E3 (ZTF) during Perihelion Revealing a Glowing Greenish Coma and Long Ion Tail

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The image shows a close-up view of Comet c/2022 E3 (ZTF) during Perihelion, when it was close to the Sun, on 12th January 2023. Featuring a wonderful greenish coma from glowing carbon gas and a long ion tail by the ions ejected from the icy comet nucleus, the comet was photographed late in the night at a distance of 108 million Km from Dark Sky® Alqueva Observatory in Portugal, two hours before starts the astronomical twilight. This long distance traveller not seen in 50,000 years, is moving fast against the background starry sky, and that night it was located between constellations of Hercules, Corona Borealis and Bootes, showing a faint visual magnitude of +7.3. Although on 1st February the Comet it will be in the closest point to our planet and eventually until then could reach a naked eye magnitude, but this kind of objects are pretty unpredictable and we never know what surprise is waiting for us.

PT: A imagem revela um close-up do Cometa c/2022 E3 (ZTF) durante o Periélio, quando este esteve mais perto do Sol, a 12 de Janeiro de 2023. Apresentando um maravilhoso Coma esverdeado proveniente do brilho do gás carbono e uma longa cauda de iões pelos iões ejetados do núcleo gelado do cometa, o ZTF foi fotografado no final da noite a uma distância de 108 milhões de Km do Observatório Oficial Dark Sky® Alqueva, em Portugal, duas horas antes do início do crepúsculo astronómico. Este viajante longínquo que não se avistava há cerca de 50.000 anos, move-se muito rapidamente contra o fundo do céu estrelado, e naquela noite estava localizado entre as constelações de Hercules, Coroa Boreal e Boieiro, mostrando uma fraca magnitude visual de +7.3. Embora a 1 de Fevereiro o cometa esteja no ponto mais próximo do nosso planeta e eventualmente até então possa atingir uma magnitude visível a olho nu, este tipo de objectos é bastante imprevisível e nunca sabemos que surpresa nos reserva.


Technical details | Detalhes Técnicos

Taka FSQ-106ED at F5 – EM200 auto-guidedi n Asiair Pro | Nikon D850 mod | ISO2500 – Sub Exp. 180 seconds x 29 lights | Total integration: 87 minutes = 1,5 hours. Processing on PixInsight 1.8.9-1 and Photoshop CC 2023. Cumeada Observatory from Dark Sky® Alqueva Reserve, Reguengos de Monsaraz.


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