... NGC6514) is an H II region with a remarkable collection of open cluster, emission nebula (the lower, red portion), reflectionnebula (the upper, blue portion) and dark nebula (the septation within the emission nebula causing the trifid appearance, also ...
... NGC6514) is an H II region with a remarkable collection of open cluster, emission nebula (the lower, red portion), reflectionnebula (the upper, blue portion) and dark nebula (the septation within the emission nebula causing the trifid appearance, also ...