2008.05.29
Sheep Clouds across the Sky
The sky over the Operations Support Facility (OSF) was covered by sheep clouds (altocumulus cloud), as if small cotton pieces were placed in rows. Since there …
News
701 - 720 / 916
2008.05.15
Kelvin-Helmholts Instability Cloud Appeared
A streak of cloud, shaped something like French bread, appeared in the sky over the Operations Support Facility (OSF). A cloud shaped like this is called Kelvi…
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…
2008.05.09
Current Status of OSF
This picture was taken at the antenna assembly area of ALMA Operations Support Facility (OSF). These four antennas are ACA 12-m antennas designed by the Nation…
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.
2008.04.03
Beautiful Rainbow over the Japanese ACA Antenna
A beautiful rainbow appeared over the antenna assembled at the ALMA Operations Support Facility (OSF) in the Atacama Desert. Due to very low humidity, a rainbo…
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 to be Delivered to ALMA
Mar 18, 2008 A gigantic radio telescope ALMA (Atacama Large Millimeter/submillimeter Array) is under construction in Chile through collaboration among Japan, …
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 …
2008.02.21
Total Lunar Eclipse
A total lunar eclipse was observed during the nighttime in Chile (the daytime in Japan time). We successfully took clear images of the eclipse, though clouds c…
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…
2008.02.05
Night Sky over the OSF
The photo shows the night sky over the Operations Support Facility (OSF). At the center of the Milky Way is the Southern Cross, and its lower black regions are…
2008.02.04
Highland Training for Soccer
This photo shows AIV (Assembly, Integration, and Verification) Team members playing soccer after Sunday lunch at an altitude of 2900 meters. In order to increa…
2008.01.16
Altiplanic Winter
During the summer season in Atacama, we sometimes have heavy rains and thunderstorms. The period from January through February is called “Altiplanic Wint…
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…
NEW ARTICLES
2024 12.24
A Baby Star in Action: B335 Offers a Natural Laboratory for Astrochemistry
Scientists have taken an unprecedented step forward in understanding the chemical processes occurring as new stars form…
2024 12.13
ALMA Reveals the Birthplace of a Planetary System: dust accumulation to form a new planet outside just-formed planets
The Atacama Large Millimeter/submillimeter Array (ALMA) has successfully observed a site of planet formation by detecti…
2024 10.8
Space oddity: Most distant rotating disc galaxy found
This article is a revised version. Please check the original press release by the European South Observatory here. This…
