NGC2359-Casco Thor (Jesús M. Vargas)

NGC2359-Casco Thor

Link to TIFF/FITS: http://www.sky-astrophotography.com/index.php?nodo=3titulo=galeria&level=picture&id=724

Zona de observacion: Benamahoma 05 Febrero 2011

Telescopio fotografico: Takahashi FSQ 106 a F/8

Telescopio guia: Lunático EZG-60

Montura: Losmandy G-11 con Gemini v.4

Camara de guiado: QHY-5

CCD de captura: DSLR Canon 350 Modificada

Tiempo de exposicion: 16x300" + 8x720" ISO 800 RAW

Crop ó recorte de la original de NGC-2359 Casco de Thor, es una nebulosa de emisión en la constelación de Canis Major situada a algo más de 8 grados de Sirio (α Canis Majoris). Su inusual forma, semejante al casco de un guerrero vikingo, ha llevado a que sea conocida también como Nebulosa del Casco de Thor. Puede ser observada, en cielos oscuros, con telescopios pequeños a 47x con la ayuda de filtros del tipo Oxígeno III. La estrella que se encuentra en el interior de la burbuja, denominada WR 7 (HD 56925), posee magnitud aparente 11,5. Es una estrella de Wolf-Rayet y es la fuente que ilumina esta nebulosa de Wolf-Rayet. La nebulosidad es el resultado de la interacción entre el viento estelar procedente de la caliente estrella y la materia interestelar. El viento comprime la materia interestelar produciéndose una burbuja de gas en torno a la estrella. La masa de la burbuja se estima en unas 20 masas solares. Aunque de naturaleza similar a la Nebulosa Burbuja (NGC 7635), la interacción con una nube molecular vecina parece haber contribuido a moldear la compleja forma de la nebulosa.

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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