Figure 4.
GMOS-N g band zero
point as a function
of time. The various
mirror coatings and
CCD installations are
marked with vertical
dotted lines. Far right is
the recent uptick due to
the recoating of M2.
primary at Gemini South. The beneficial effect of a fresh coating on M2 is clearly seen
in the GMOS-N zero points shown in Figure
4. In Chile, the coating of the Gemini South
primary mirror was a team effort, with staff
attending from both Gemini sites, CerroTololo-Inter-American Observatory, and the
Southern Astrophysical Research (SOAR)
telescope. The results were excellent.
Also in the south, we continued to modify
the cooling arrangements for the top-end
control computer; the warmer ambient
temperatures on Cerro Pachón have caused
problems v