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The Deepest Ground-based Photometry in a Crowded Field

Left: (Ks, F606W-Ks) color–magnitude diagram of NGC 1851; the detail of the double SGB is shown in the inset. Right: same as the left panel with average photometric (random) uncertainties indicated. Overlaid is the fiducial line with the approximate locations of the main sequence turnoff and main sequence knee highlighted by red dots.

Gemini-South telescope back in business after earthquake

The Gemini-S telescope survived an 8.4 magnitude earthquake the previous week. Following an intense week of detailed inspections and testing of the infrastructure, the telescope, and the instruments were released for normal use. During the inspection some components were found broken or displaced, but all could be repaired and adjusted and no major damage was sustained. 

On-sky tests over the weekend showed that all is well and science observations have resumed. 

Annual Progress Report and Program Plan of the Gemini Observatory

Searching for Orphan Stars Amid Starbirth Fireworks

Observando un planeta extrasolar en movimiento

Watching an Exoplanet in Motion Around a Distant Star