Name: Horsehead Nebula, Barnard 33
Object Information: This incredibly detailed view of the iconic Horsehead Nebula was photographed in infrared light by the Hubble Telescope.
The Horsehead Nebula is one of the most familiar objects in the sky and is a wonderful example of a "dark nebula" - a mass of dust and gas that blocks visible light when photographed in visible light. An example of the Horsehead photographed in visible light can be seen here. While dark nebula are generally invisible (except of course where back lit as in the case of the Horsehead), their dust grains very effectively absorb light and ultraviolet radiation and then re-radiate this energy at infrared wavelengths. This false color image was assembled with data from two of Hubble's wideband infrared filters - f110w and f160w - and nicely captures that re-radiated energy.
Camera: Wide Field Camera 3
Filters Used: f100w - ~900 to ~1400nm, f160w - ~1400 to ~1700nm
Color Assignments: red - f160w, green - f110w, blue - f110w