NGC6781 Sw200p CC Asi533mcpro g100 28L 180s -10c 13D 21.06.2025 1h24m L-Ultimate

Mais uma nebulosa planetária: NGC6781. Ela tem um formato de nebulosa anelar, lembrando muito a famosa M57 - “Nebulosa do Anel”, mas vista de um ângulo diferente. Seu formato quase circular, com regiões mais escuras e filamentosas, vem dos ventos estelares que se expandem em diferentes velocidades e direções, além da interação com o material interestelar ao redor. Sua estrela, no fim da vida, ilumina ionizando os gases ao redor que emitem cores de acordo com o elemento químico, o chamado espectro.

 

Another planetary nebula: NGC 6781. It has a ring-like shape, very reminiscent of the famous M57 – the “Ring Nebula”, but seen from a different angle. Its almost circular structure, with darker and filamentary regions, comes from stellar winds expanding at different speeds and directions, as well as from the interaction with the surrounding interstellar material. Its central star, at the end of its life, illuminates the nebula by ionizing the surrounding gases, which then emit colors according to the chemical element — the so-called spectrum.

 

* Exposures: 28 Ligth Frames of 180s, 16 darks. Used L-Ultimate filter. 1h24m minutes total exposure. Processing on Pixinsight. Bortle 1

* Camera: Zwo Asi 533mc Pro, gain 100 at -10°C

* Scope: Sky-Watcher 200p (200/1000mm) with GSO 1.1 Comma Corrector

* Mount: NEQ6 Pro Sky-watcher mount

* Guiding specs: Asiair and ASI290mc in a 60x220mm everwin guidescope

 

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