NASA. LARGE FORMAT. DEEP SPACE. A stunning photograph of the - Lot 287

NASA. LARGE FORMAT. DEEP SPACE. A stunning photograph of the famous Ring Nebula, located in the constellation Lyra. It is illuminated by a central white dwarf—the core of a planetary nebula (PNN)—with a visual magnitude of 15.75. All the inner regions of this nebula have a blue-green hue caused by the emission lines of doubly ionized oxygen at 495.7 and 500.7 nm. In the outer region of the ring, part of the reddish hue is due to hydrogen emission at 656.3 nm. M57 is an example of the class of planetary nebulae known as bipolar nebulae. This composition showcases the full resolving power of the Hubble Space Telescope. Vintage chromogenic print. Numbered on the front. Caption on a label on the back. 40.6 x 40.6 cm with margins.