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Newsletter No. 9
This ninth ALMA newsletter comes within the first ever period of ALMA observing. The good news is that the observatory is working well and is producing excellent data, and progress in constructing the full array continues on schedule. On the other hand, the rate of progress in completing the observations for the highest priority cycle 0 projects is lower than planned. As a result the cycle 0 observing period will be extended - see "ALMA Early Science Cycle 0 Status Report".
Newsletter No. 8
This eighth Science Newsletter comes at the time of the first ever call for proposals to observe with ALMA. The start of the first observing period, known as ALMA Early Science Cycle 0, is an exciting event. It marks a major milestone in the evolution of the observatory to a fully operational astronomy facility. It will also be the first opportunity for astronomers outside the ALMA project to discover for themselves what those inside the project already know, namely that "ALMA works".
Newsletter No. 7
ALMA has already erected nine antennas on the Chajnantor Plateau and expects to start its Early Science observations (Cycle 0) at the end of 2011. Detailed information of this as well as the first test images made with eight ALMA antennas is available in this Newsletter. It also contains an informative article about the Correlator or ALMA´s super computer.
Newsletter No. 6
One of the major milestones has been the successful demonstration of the phase correction using the Water Vapor Radiometer, one of the many scientific advances that you will be able to read about in this Newsletter. Learn more about how we measure and compensate the (very little) water vapor there is at ALMA´s dry site, and you will learn more about the extreme sensitivity of the receivers contained by each antenna.
Newsletter No. 5
In January 2010 the Commissioning and Science Verification formally took place, a process which intends instruments to become capable of generating images and measurements of extreme sensitivity and precision. This stage was reached in spite of the earthquake that hit the country and which allowed to use ALMA in a different way. Find out why!
Newsletter No. 4
ALMA has passed a crucial stage to ensure the high quality of its images, which will be the trademark of this revolutionary instrument of astronomy: ALMA engineers and astronomers for the first time successfully linked three of the observatory´s antennas erected at 5000 meters altitude. The operation, called Interferometry, will include the 66 antennas of the project when its construction is finished.
Newsletter No. 3
On September 17, 2009, the first antenna reached its definitive location at an altitude of 5000 meters, marking a new era for ALMA. There, at the Array Operations Site (AOS), antenna pads, power and signal connections are being constructed, while at 3000 meters the control room, computer facilities and laboratories are already finished. In this Newsletter you can learn about these new developments and about ALMA´s antenna tests.
Newsletter No. 2
The interferometric measurements of Mars demonstrated that the antennas, receivers, local oscillators, software and the correlator are functioning well at ALMA´s Operations Support Facility at an elevation of 2900 meters, a true milestone. The next one will be at 5000 meters, where the AOS (Array Operations Site) Technical Building is already finished, and where all the information obtained by each antenna will be gathered. In this Newsletter we start a section dedicated to explain the unique capabilities of ALMA instruments, beginning by receivers.
Newsletter No. 1
In this first issue we reveal our great milestone: ALMA´s acceptance of the first two antennas. We also summarize the new developments reached, we reveal images of the haulage of the first antennas on the huge transporters especially created for this purpose.