High Res Click Below
http://bcjones.zenfolio.com/img/s10/v17/p225841004.jpg9 x 600sec each Ha-Oiii-Sii Bined 1x1
Scope: Tak FSQ 106 @f5
Camera: QSI 583 wsg
Mount: Takahashi Temma EM 400
Filters: Astrodon LRGB E SERIES GEN-II for RGB's
Astronomik 12.5 nm Ha-Oiii-Sii for NarrowBand Images
Guiding: Starshoot Autoguider
Target Aqusition: CCD4AP_ PinPoint
Camera Control: Maxim DL5
Focus - Robo Focus Automated with FocusMax
The Sky 6 The Rosette Nebula is arguably one of the finest HII regions in the northern sky. Located in the constellation Monoceros, the nebula's center has been excavated centrally by the radiation pressure and powerful stellar winds of the massive OB stars belonging to its central cluster NGC 2244. The Rosette Nebula represents an ionization front along the edge of an enormous molecular cloud complex extending across 300 light years of winter sky called the Rosette molecular cloud (RMC). The RMC contains enough gas and dust to create over 100,000 suns. The hot stars of NGC 2244 are about 3 million years old (range of 0.3 to 6.4 Myr) and form the core cluster of the larger Monoceros OB2 stellar association. Monoceros OB2 contains at least three subassociations, the smallest being NGC 2244 at about 40 light years in diameter. Star formation is occurring along the edge of an expanding gas shell coincident with the interface of the Rosette Nebula with the surrounding RMC suggesting that sequentially triggered star formation is at work and progressing outward in the Rosette. The process by which massive molecular clouds transform themselves into clusters of stars is controversial. A likely explanation is that imbedded clusters form by compression of the molecular cloud by external shocks or triggering events. Triggering events can be supernova shock fronts, stellar winds from massive stars or expanding shells of neutral gas which all serve to compress and fragment the cloud into clumps
