M42 - NGC1976 - Great Orion Nebula  
Orion

Diffuse nebula situated south of Orion's Belt. 7nm H-alpha filter.		  
 
It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,270±76 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. Older texts frequently referred to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula. Yet older, astrological texts refer to it as Ensis, which is also the name of the star Eta Orionis.

The Orion Nebula is considered to be one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula.

 
 
Technical details:  
Location:  
 Soria - Spain
Date:  
 23/11/2007 (dd/mm/yyyy)
Conditions:  
 Good
Temperature:  
 -5ºC
Humidity:  
 
Telescope:  
 Long Perng ED80 f/6.9
Reducer/corrector:  
 f/6.3 Meade
Filter:  
 Baader Ha 7nm 2"
Mount:  
 Vixen GPD2 Autostar Meade
Camera:  
 Canon 350D no filter
Exposure:  
 6x60s + 4x900s + 1x600s, ISO400
Guiding tube:  
 B&C 60/350 f7
Guiding camera:  
 Meade DSI Pro
Guiding software:  
 K3CCDTools
 
Procesing:  
 Calibrado SIN darks. Apilado. Histogramas, curvas y NR. Recortada los bordes para eliminar marca Canon y encuadrar.  
Notes:  
 En realidad esto es una prueba para experimentar lo difícil que es procesar M42 para evitar que se sature el núcleo. Me parece un objeto muy fácil de capturar pero tremendamente difícil de procesar. Esta toma está muy ruidosa por la falta de darks.  
     

 
All Contents Copyright by Jaime Fernández and Copyright of their respectives owners. Text mainly extracted from Wikipedia.
All Jaime Fernandez propietary contents freely available for non-profit purposes,
otherwise I beg you for a fair contribution to NGO Medicos Sin Fronteras proportional to the profit obtained.

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