M8 - The Lagoon Nebula
Within the brightest part of the Lagoon Nebula, a remarkable feature can be seen, which according to its shape is called the "Hourglass Nebula".
Image taken 29 July 2006 from Lockwood Valley, California.

Red Filter 120 minutes 1x binned, 3 minute sub-exposures

Total Exposure Time = 2 hours