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Orion nebula and horsehead (RGB palette)

Two frame mosaic of the Orion sword area including the Orion nebula (M42) and the Horse Head nebula (IC434). Image shown at 25 % of the original size
Equipment: Takahashi FSQ106 scope. ASA DDM85 mount. SBIG STL11000 camera. Narrowband filters (SII; H alpha, and OIII)
Location: Pozuelo (Madrid)
Date: January and february 2011
Exposure: 24 hours, 48 unguided subexposures of 30 minutes