South Pole Telescope

Assembled from 19 blocks · 1 evidence · 8 related

1. Story
2. A ten-metre millimetre-wave telescope at the Amundsen-Scott South Pole Station, and the station that gives the Event Horizon Telescope its longest baselines - to Chile, to Spain, to Hawaii. Its value to the array is entirely geometric: an interferometer resolves detail in proportion to the separation of its stations, and no station on Earth can be further from Chajnantor in the relevant direction. Its cost is logistical. The site is unreachable for months, and the 2017 observations recorded there could not be flown out until flights resumed at the end of the austral winter, which delayed correlation of the whole campaign. No coordinate is given in this record: the telescope stands within about a kilometre of the geographic South Pole, where longitude is nearly degenerate, and no precise published position could be checked in this session.
3. Knowledge
4. Event Horizon Telescope
5. South Pole Telescope
6. Connections
7. Event Horizon Telescope
8. The Event Horizon Telescope observes M87* and Sagittarius A*
9. The Event Horizon Telescope observes M87* and Sagittarius A*
10. Very long baseline interferometry
11. Atacama Large Millimeter/submillimeter Array
12. South Pole Telescope
13. The Event Horizon Telescope observes M87* and Sagittarius A*
14. The first image of a black hole shadow is published
15. The M87* ring is imaged in polarised light
16. The black hole at the centre of our own galaxy is imaged
17. A second epoch shows the ring persists and the bright spot moves
18. Evidence
19. Reports the first image of a black hole shadow, an asymmetric ring about 42 microarcseconds across, together with the array, observing campaign and imaging methodology. V55 VERIFICATION BASIS: not consulted in session; WebFetch to iopscience.iop.org and eventhorizontelescope.org was refused by the egress proxy and no search could be issued. Volume and article number are from recall of a canonical citation.