Crab Nebula gets the "Blues"
Don't let it's cool blue color fool you, the filaments in this behemoth of a nebula are estimated to be between a scorching 11,000 and 18,000 K (19,341 - 31,941 deg Fahrenheit). The image was created using 2 narrow band filters (F502N - blue, F673 - Red, added together to make a computer generated green layer) and 1 medium band filter (F547M - Cyan) obtained from the Hubble ESO/ST-ECF Archive. All data was processed using the Fits Liberator's Linear stretch function. The eight separate panes (4 colors per pane = 32 layers total) were then stitched together in Adobe Photoshop CS. The picture was finally cropped and scaled down by about 70%.
This fits liberator image is not available for sale.Credit: