This is a another narrowband image which has been taken with Sulphur II (SII 671.7 & 673.0 nm), Hydrogen alpha (Hα 656.3nm) and doubly ionised Oxygen (OIII at 500.7 & 495.9nm) filters. The resulting 3 monochrome images have then been combined to get a blend of the SHO and HOO palettes, where the amount blended for each pixel position in the image is dependant on the prevalance of the light from the three elements. The resulting 'Forax' (or 'ForaX') palette has then itself been blended 50/50 wiht a regular SHO processed image.
The Tulip Nebula, can be found in the constellation of Cygnus and without this kind of specialist processing is more of 'red blob'!
For more details on Forax see this youtube video.