Sh2-101, as designated in the Sharpless Catalog of HII regions, is also communally known as the Tulip Nebula. This colorful nebula is located in the constellation Cygnus the Swan at an approximate distance of 6,000 light years from the Earth. An object of much scientific interest, the microquasar Cygnus X-1, is located just to the right of the Tulip. It is a source of intense X-Ray emission and is the site of one of the first suspected black holes. The location of Cygnus X-1, in relation to the Tulip Nebula, may be viewed at this link. Move you mouse over the displayed image to see the location identified.
The image above is known as a mapped, or false, color image and was acquired using narrowband filters. It was assembled using the standard Hubble Palette with SII mapped to red, Ha mapped to green and OIII mapped to blue. The stars were overlaid with RGB data to give them a near true color appearance. A Bi-Filtered near true color image of Sh2-101 may be viewed here.