Astrometría e Historia de la Astronomía

José Gómez Castaño 

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    Mi otro blog

    Blogalia

    Guía rápida para el observador de ocultaciones por asteroides

    Objetivo Registrar la desaparición y reaparición de una estrella al ser ocultada por el paso de un asteroide. Esto proporciona información sobre la trayectoria, forma y dimensiones del asteroide.

    1.- Localizar el lugar de observación. Hay dos factores que inciden sobre la elección del lugar de observación. La sombra proyectada por un asteroide es muy estrecha, a penas unos kilómetros y por esta razón hay que delimitar con cuidado esta zona. Por otro lado, la posición del asteroide no se conoce con precisión, lo que introduce gran incertidumbre. A partir de la trayectoria prevista, habrá que situarse en algún lugar a lo ancho de la zona de sombra, centrándose en la de mayor posibilidad.

    2.- Tomar una fuente de tiempos fiable. Para registrar los instantes de desaparición y reaparición de la estrella, hay que sincronizar nuestro cronómetro o sistema de medida. Las señales horarias de Radio Nacional de España o utilizar un programa para sincronizar el ordenador con un reloj atómico, tipo Dimension4, son las mejores soluciones.

    3.- Localizar la estrella a ser ocultada con la ayuda de un buen Atlas estelar

    4.- Llegar con tiempo al lugar de observación elegido y localizar la estrella lo más fielmente posible.

    5.- Comenzar la observación 15 minutos antes de la hora prevista y finalizarla 15 minutos después. En caso de observarse la ocultación, anotar los instantes de desaparición y reaparición de la estrella. Si no se ha observado ocultación, esta se registra como negativa y tiene valor. Las observaciones pueden ser visuales y mediante vídeo, teniendo ambas mucho valor.

    ¿Qué hay que registrar y enviar a la EAON o IOTA?

    Usando los partes de observación para la EAON o la IOTA, es importante enviar las ocultaciones positivas y las negativas. En ambos casos indicar la posición geográfica desde la que se observa, y los instantes observados en T.U.


    Efemérides completas


    Manual oara observación de Ocultaciones Estelares

    2007-02-01 14:22 | Categoría: | 30 Comentarios | Enlace



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    Con esta guia rapida los que somos aficionados a los asteroides aprenderemos mas y podremos observarlos aun mejor. Hay alguna manera de hacer fotos a los asteroides?



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