The central part of Messier 12
Centre of the globular cluster Messier 12 as observed with the FORS-1 multi-mode instrument on ESO's Very Large Telescope (Cerro Paranal, Chile). The picture covers a region of about 3.5 arcmin on a side, corresponding to about 23 light-years at the distance of Messier 12. It is based on data in five different filters : U, B, V, R and H-alpha. Here only the short exposures were used while for their scientific analysis, the authors used much longer exposures. Guido De Marchi (ESA) reduced the data and Kristina Boneva and Haennes Heyer (ESO) did the final image processing. The observations were obtained with very good conditions, the image quality ('seeing') being around 0.6 arcsec.
Crédito:ESO
Sobre la imagen
Identificador: | eso0604a |
Tipo: | Observación |
Fecha de publicación: | 7 de Febrero de 2006 |
Noticias relacionadas: | eso0604 |
Tamaño: | 3060 x 3056 px |
Sobre el objeto
Nombre: | Messier 12 |
Tipo: | Milky Way : Star : Grouping : Cluster : Open |
Distancia: | 23000 años luz |
Constellation: | Ophiuchus |
Categoría: | Star Clusters |
Fondo de pantalla
Coordenadas
Position (RA): | 16 47 14.25 |
Position (Dec): | -1° 56' 48.17" |
Field of view: | 3.39 x 3.39 arcminutes |
Orientación: | El norte está a 0.0° a la izquierda de la vertical |
Colores y filtros
Banda | Longitud de onda | Telescopio |
---|---|---|
Óptico H-alpha | 656 nm | Very Large Telescope FORS1 |
Óptico R | 600 nm | Very Large Telescope FORS1 |
Óptico V | 554 nm | Very Large Telescope FORS1 |
Óptico B | 420 nm | Very Large Telescope FORS1 |
Oltravioleta U | 360 nm | Very Large Telescope FORS1 |