International Gemini Observatory/NOIRLab/NSF/AURA
Long-slit composite spectrum from Gemini/PHOENIX
Long-slit composite spectrum from Gemini/PHOENIX showing [Fe II] in blue and molecular hydrogen H2 in red, simultaneously. The bright blue feature in the center, which appears stretched horizontally here, is a younger and smaller bipolar nebula called the Little Homunculus. It was ejected about 50 years after the major eruption that created the larger nebula.
