The Lion Nebula Sh2-132 Immersed in a Glowing Field of Hydrogen Gas
Alqueva´s Dark Sky Reserve | By Year: 2024 | Deep Sky Wide Field
Captured in HaOIII and RGB light, the image features a deep wide field view of Sh2-132 immersed in the glow of ionized hydrogen gas. Also known as the Lion Nebula, it is located at about 10,000 light years away in the Cepheus constellation. Formed from expanded shells of ionized gas, the nebula is powered by two massive stars, each with a mass over 20 times greater than our Sun.The nebula’s energetic matter is dense enough to contract gravitationally and form stars. One side is more predominant of reddish hues from Ha emission, while the other one is more predominant of blusish hues from ionized Oxygen in OIII emission. The wide field view covering a little bit more than the angular size of the full moon can also comprise small planetary nebulas, like PK104-01.1; PK104-01.2 or the 1.0 arc minute small planetary nebula Abell 79. The image was captured from Dark Sky® Alqueva Observatory, Cumeada, in Portugal, with the New ZEUS 455C Pro. from Player One Astronomy.
PT: Captada em diferentes comprimentos de onda entre a luz Ha, OIII e RGB, a imagem apresenta uma visão ampla de Sh2-132, um objecto de céu profundo imerso no brilho do gás hidrogénio ionizado. Também conhecida como Nebulosa do Leão, está localizada a cerca de 10.000 anos-luz de distância, na constelação de Cefeu. Formada a partir de “conchas expandidas” de gás ionizado, a nebulosa é alimentada por duas estrelas massivas, cada uma com uma massa 20 vezes superior à do nosso Sol. A matéria energética da nebulosa é suficientemente densa para se contrair gravitacionalmente e formar estrelas. Um dos lados é mais predominante nos tons avermelhados provenientes da emissão de Ha, enquanto o outro lado é mais predominante nos tons azulados relativos ao Oxigénio ionizado, na emissão de OIII. A imagem cobre um pouco mais do que o tamanho angular da lua cheia, incluindo assim no seu campo de visão, pequenas nebulosas planetárias, como: PK104-01.1; PK104-01.2 ou a pequena nebulosa planetária Abell 79, com apenas 1 minuto de arco. A imagem foi captada a partir do Observatório Oficial do Dark Sky® Alqueva, na Cumeada, Portugal, com uma câmara Player One Astronomy, a nova ZEUS 455C Pro.
Below: The annotated version produced with PixInsight script, based in several known catalogues to identify the main objects in the image.
PT: Em baixo: A versão legendada com anotação produzida pelo script do PixInsight baseado em vários catálogos reconhecidos, identificando assim os principais objectos visíveis na imagem.
Technical details | Detalhes Técnicos
Taka FSQ-106ED at F5 – EM200 auto-guided in N.I.N.A| Camera ZEUS 455C Pro from Player One Astronomy | Sub Exp. 5 min with Anit-Halo PRO Dual-Band Filter 2″ (Ha+OIII) 3nm from Player One Astronomy | Total integration of 23.5h (21 in HaOIII + 2.5h in RGB). Processing on PixInsight 1.8.9-2 and Photoshop CC 2024. Cumeada Observatory from Dark Sky® Alqueva Reserve, Reguengos de Monsaraz, Portugal.
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