2008.12.09
ACA 12-m Antenna successfully transferred by a Transporter
ALMA (Atacama Large Millimeter/submillimeter Array) is under construction in Chile in global partnership between East Asia, Europe, and North America. On Decem…
ALMA Discoveries
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2008.11.07
Test Dewar for Receiver Cartridges
The NAOJ Advanced Technology Center (ATC) in Mitaka fabricates test dewers for receiver cartridges and delivers them to the ALMA receiver cartridge development…
2008.10.16
Installation of the Receiver System (Front End)
A receiver system called front-endEwas installed in one of the ACA 12-m antennas at the Operations Support Facility (OSF). The Front End is a system to receive…
2008.09.16
Lunar eclipse observed with a radio telescope
These moving images show the moon during the total lunar eclipse which was observed from February 20 through 21, 2008. Using the ACA antenna with fast servo pe…
2008.09.12
PDR for the ACA 7-m Antenna
From September 9 through 11, the Preliminary Design Review (PDR) for the ACA 7-m Antenna, developed by ALMA-J, was held in Amagasaki, Japan. In the review, its…
2008.08.28
Moving images of "Synchronous driving of Japanese antennas at the OSF" were released.
“Moving images of antennas”
2008.08.27
Installation of Back End
On August 27, the Back End system was installed in an ACA-12m antenna at the Operations Support Facility (OSF). The picture shows the staff members pleased wit…
2008.08.22
Electrical Interface Test with a Transporter
Using the ACA antenna #4, an electrical interface test was conducted between the antenna and a transporter (antenna carrier). This was the first time that a Ja…
2008.08.21
Synchronized Driving of Four ACA Antennas
In the daytime of August 21, four ACA antennas were driven synchronously for the first time at the Operations Support Facility (OSF). It was very impressive to…
2008.07.28
Radio spectrum observed with the first antenna
This is an analysis result of the radio spectrum of CS molecular gases (rotational transition J=3-2, 146.969026 GHz) in a celestial object called Orion KL, whi…
2008.05.31
ALMA Booth at the Japan Geoscience Union Meeting 2008
From May 25 through 30, the Japan Geoscience Union Meeting 2008 was held in the international exhibition hall at Makuhari Messe, and NAOJ set up a booth featur…
2008.05.14
Radio image of the sun obtained using the first antenna
These are radio images of the sun, which were obtained using the first ACA 12-m antenna manufactured by Japan. In these images, white color indicates strong in…
2008.04.15
First four ACA 12-m antennas were completed at the OSF
The first four 12-m antennas of ALMA-Japan constructed at the ALMA Operations Support Facility in Chile.
2008.04.01
Tetsuo Hasegawa becomes Interim ALMA Project Manager
From May 1, Tetsuo Hasegawa, Professor at NAOJ, will be Interim ALMA Project Manager at the Joint ALMA Office (JAO). On April 1, prior to the assignment, he wa…
2008.03.18
Result of the initial testing of the Japanese ACA 12-m antenna
Result of the Initial Testing of the Japanese ACA 12-m Antenna to be Delivered to ALMA First Radio Image of the Moon Taken with an ACA Antenna (Left: Optical i…
2008.02.27
PDR of Band-10 Cartridge Receiver
In Mitaka, the Preliminary Design Review of Band-10 Cartridge Receiver (787-950 GHz) developed by Japan was held on February 26 and 27. The Band-10 Team of NAO…
2008.02.27
Antenna Surface Adjustment
Surface adjustment of a 12-m antenna is conducted using a manlift. The smoothness of the surface is measured by radio holography to achieve a surface accuracy …
2008.02.15
Installation of the Receiver
From February 7 through 15, the first receiver was installed into the ACA antenna. To safely install the receiver weighing about 1 ton, we had to make a delibe…
2007.12.19
ACA Correlator and its Monitor and Control System Installed
ACA Correlator and its Monitor and Control System made by Fujitsu Co. Ltd. were installed at ALMA Array Operations Site (alt. 5000 m).
2007.12.06
Characters drawn with a Japanese ACA antenna for ALMA
The characters “ACA” (Atacama Compact Array) were drawned by photographing Jupiter with antenna moving. One of the first three Japanese ACA antenna…
NEW ARTICLES
2026 1.13
Students Honored for Collaborative Research with ALMA Receiver Development Team
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- News ALMA Technology
Two students from the University of Electro-Communications (UEC) have received awards for their collaborative research …
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Multiple Origins Behind The Extreme Star Formation In “Monster Galaxies”
An international research team has conducted detailed observations of three “monster galaxies” in the early Universe us…
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Kenichi Tadaki Selected for Prestigious Research Grant for ALMA-Based Study
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- News Cosmic Mysteries
Professor Kenichi Tadaki of Hokkai-Gakuen University has been selected for the 58th Research Grant (FY2025) in the Spac…
