Compass/Scale Annotated Image of the Center of the Milky Way
26,000 light-years (8 kiloparsecs)
The composite image of the galactic center is 32.5 arcminutes (246 light-years or 75.5 parsecs) wide.
Spitzer Data: The Spitzer Space Telescope data were courtesy of NASA, Jet Propulsion Laboratory, and S. Stolovy (Spitzer Science Center/California Institute of Technology).
Hubble Data: The Hubble component was from the HST proposal 11120: Q.D. Wang (University of Massachusetts, Amherst), S. Stolovy (Caltech), C. Lang (University of Iowa), A. Cotera (SETI Institute), M. Muno (Caltech), M. Morris (University of California, Los Angeles), D. Calzetti (University of Massachusetts, Amherst), S. Ramirez (Caltech), and G. Schneider (University of Arizona).
Chandra Data: The science team was led by Q.D. Wang (University of Massachusetts, Amherst). Image courtesy of NASA/CXC/UMass/Q.D. Wang et al.
SST: 3.6 microns, 4.5 microns, 5.8 microns, and 8.0 microns
HST: F187N (Paschen-Alpha) and F190N (Paschen-Alpha continuum)
CXO: 1-3 keV, 3-5 keV, 5-8 keV