IC4592 or vdB100 is the catalog designation for the reflection nebula more commonly known as Blue Horsehead. It's located in the constellation of Scorpius. The main reflection (blue nebulosity), located near the center of the image, is lit by the 4th magnitude star Jabbah. The image also shows some dust in the left-bottom part with yet another reflection nebula - IC4601. This is a broad-band, RGB image attempting to show the colors (though saturated) in their true appearance.
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