Nebulae  Back to Photo Gallery - Nebulae
 NGC281 - The Pacman Nebula 

Bok Globules
Gas Column
Gas Column

Look through the cosmic cloud cataloged as NGC 281 and it's almost easy to miss stars of open cluster IC 1590. But, formed within the nebula, that cluster's young, massive stars ultimately power the pervasive nebular glow. The eye-catching shapes looming in this portrait of NGC 281 are sculpted columns and dense dust globules seen in silhouette, eroded by intense, energetic winds and radiation from the hot cluster stars. If they survive long enough, the dusty structures could also be sites of future star formation. Playfully called the Pacman Nebula because of its overall shape, NGC 281 is about 10,000 light-years away in the constellation Cassiopeia. This composite image was made through narrow-band and broad-band filters combining emission from the nebula's hydrogen in a visible spectrum palette. It spans over 80 light-years at the estimated distance of NGC 281. [Text from APOD]

Optics: GSO RC 10" F8 2000mm - Astrograph Ritchie-Chrétien
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: ATIK 4000LE with SX USB Filter Wheel
Filters: Baader LRGB 2" and H-Alpha 7nm
Guiding Systems: SXV-AO-LF Active Optics - SX Lodestar
Dates/Times: 17/18 october 2011
Location: Pragelato (TO) - Italy
Exposure Details: H:R:G:B => 600:90:70:90 = > (20x30):(9x10):(7x10):(9x10) all Bin1 [num x minutes]
Cooling Details: -20°C
Acquisition: Maxim DL/CCD, Perseus
Processing: CCDStack2, PS CS2, PixInsight
Mean FWHM: 2.78"/3.11" (2.10"/2.64" for Ha)
SQM-L: 21.07 / 45% Moon