Two Micron All Sky Survey

Target entity: Two Micron All Sky Survey
Context triple: [Canis Major Dwarf Galaxy, discoveredUsing, Two Micron All Sky Survey]

• A. Advanced Camera for Surveys
  The Advanced Camera for Surveys is a high-resolution imaging instrument on the Hubble Space Telescope designed to capture detailed observations of distant galaxies, galaxy clusters, and other faint astronomical objects.
• B. Submillimeter Array
  The Submillimeter Array is a radio interferometer of eight 6-meter telescopes that observes the universe at submillimeter wavelengths, enabling high-resolution studies of cold gas, dust, and star-forming regions in space.
• C. Dark Energy Survey
  The Dark Energy Survey is a large international astronomical project that uses a wide-field camera on a Chilean telescope to map hundreds of millions of galaxies and study the nature of dark energy and cosmic acceleration.
• D. Víctor M. Blanco 4-meter Telescope
  The Víctor M. Blanco 4-meter Telescope is a prominent optical telescope in Chile widely used for deep-sky surveys and cosmological research.
• E. Canada–France–Hawaii Telescope
  The Canada–France–Hawaii Telescope is a 3.6-meter optical and infrared telescope on Mauna Kea in Hawaii, operated collaboratively by Canada, France, and the University of Hawaii for astronomical research.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Two Micron All Sky Survey
Target entity description: The Two Micron All Sky Survey (2MASS) is an astronomical survey that mapped the entire sky in near-infrared wavelengths, producing a comprehensive catalog of stars, galaxies, and other celestial objects.

• A. Advanced Camera for Surveys
  The Advanced Camera for Surveys is a high-resolution imaging instrument on the Hubble Space Telescope designed to capture detailed observations of distant galaxies, galaxy clusters, and other faint astronomical objects.
• B. Submillimeter Array
  The Submillimeter Array is a radio interferometer of eight 6-meter telescopes that observes the universe at submillimeter wavelengths, enabling high-resolution studies of cold gas, dust, and star-forming regions in space.
• C. Dark Energy Survey
  The Dark Energy Survey is a large international astronomical project that uses a wide-field camera on a Chilean telescope to map hundreds of millions of galaxies and study the nature of dark energy and cosmic acceleration.
• D. Víctor M. Blanco 4-meter Telescope
  The Víctor M. Blanco 4-meter Telescope is a prominent optical telescope in Chile widely used for deep-sky surveys and cosmological research.
• E. Canada–France–Hawaii Telescope
  The Canada–France–Hawaii Telescope is a 3.6-meter optical and infrared telescope on Mauna Kea in Hawaii, operated collaboratively by Canada, France, and the University of Hawaii for astronomical research.
• F. None of above. chosen