Monthly Archives: August 2012

M42 through the RCT’s Hα filter

A 30-second exposure of the HII region, M42 (the Orion Nebula) taken through the RCT’s Hα  filter.  The full-field image is nearly 10 arcminutes square with North up and East to the left. Major features such as the Dark Bay (upper left), the Bar and the Trapezium stars (center) are clearly visible.  The zoomed image presents a more detailed view of the inner region of the nebula. Stars fainter than 16th magnitude are visible near the Trapezium. Emission features such as ionized knots and shock fronts are clearly visible.