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…
ALMA Discoveries
301 - 320 / 392
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…
2007.10.12
First three Japanese 12-m antennas were assembled at the OSF
Japan is responsible for manufacturing 16 antennas in total for ALMA. The first three Japanese antennas assembled looked very beautiful.
2007.10.04
Success of Antenna Driving Test
At the ALMA Operations Support Facility in Chile, the first driving test of the Japanese ACA 12-m Antenna #1 was carried out. The antenna monitor and control s…
2007.09.19
ALMA Head of Administration Meeting
From September 18 through 19, the ALMA Head of Administration Meeting was held at NAOJ in Mitaka, Tokyo, jointly by the Joint ALMA Office (JAO) in Chile and th…
2007.09.10
ALMA External Review
From September 10 through 12, a three-day joint external review of the ALMA project was held in Santiago, Chile. From Japan, 7 people attended the meeting: Nob…
2007.07.23
Three Japanese 12-m antennas arrived at the ALMA site in Chile
Three Japanese 12-meter antennas were shipped from Tamashima Port in Okayama, Japan to Mejillones Port in northern Chile, after completing the manufacturing pr…
2007.07.11
CASA Users Test
From July 9 through 11, an internal user test of CASA (Common Astronomical Software Applications) was conducted in the headquarters of European Southern Observ…
2007.06.14
Nutator Preliminary Design Review
The Preliminary Design Review (PDR) for the nutator was held on June 13 and 14 at Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) in Taiwan. Th…
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On March 21, 2025, NAOJ participated in the public event "Open Day 2025" held at the Joint ALMA Observatory in Santiago…
