3 Director’s Message
Kissler-Patig
Markus
6 Featured Science: Dynamical Masses of Galaxy Clusters Discovered
with the Sunyaev-Zel’dovich Effect
Cristóbal Sifón, Felipe Menanteau, John P. Hughes, and L. Felipe Barrientos, for the ACT collaboration
11 Science Highlights
Nancy A. Levenson
14 Cover Story: GeMS Embarks on the Universe
Benoit Neichel and Rodrigo Carrasco
19 Instrumentation Development Updates
Percy Gomez, Stephen Goodsell, Fredrik Rantakyro, and Eric Tollestrup
23 Operations Corner
Andy Adamson
26 Featured Press Release:
Comet ISON Hurtles Toward an Uncertain Destiny with the Sun
GeminiFocus July 2013
On the Cover:
The montage on
this issue’s cover
highlights several of
the spectacular images
gathered as part of
the System Verification
of the Gemini Multiconjugate adaptive
optics System (GeMS).
See the article starting
on page 14
to learn more about
this system and the
cutting-edge science it
is performing — right
out of the starting gate!
2
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Online viewing address:
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Managing Editor: Peter Michaud
Science Editor: Nancy A. Levenson
Associate Editor: Stephen James O’Meara
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Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s)
and do not necessarily reflect the views of the National Science Foundation.
GeminiFocus
July2013