2012.05.29
First Test Polarization Observation with ACA Antennas and ACA Correlator
On April 29 (Chilean time), we conducted a test polarization observation using five Japanese 7-m ACA (Atacama Compact Array) antennas and a Japanese ACA correl…
ALMA Technology
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2012.05.02
Successful Interferometer Test with Two Japanese Antennas 1966 m away
On the night of April 28 (Chilean time), interference fringes were successfully detected in an interferometer test using two Japanese antennas at a distance of…
2012.03.28
Successful Interferometer Test with Band 8 Receiver
On March 18, 2012, an interferometer test was conducted at the Array Operations Site (AOS) at 5000 m asl using two Japanese 7-m antennas equipped with the Band…
2011.11.22
Packing of Band 4 and Band 8 Receivers
One Band 4 and one Band 8 receivers were packed at the NAOJ Advanced Technology Center in Mitaka on November 8, and sent by air from Narita to Washington on No…
2011.10.03
ALMA Opens Its Eyes
The most powerful millimeter/submillimeter-wavelength telescope in the world opens for business and reveals its first image Humanity’s most complex grou…
2011.09.02
Successful Interferometer Test with Japanese 7-m and 12-m Antennas at AOS
On September 2, an interferometer test was conducted with the first Japanese 7-m and first 12-m antennas at the Array Operations Site (AOS) at 5000 m asl and i…
2011.08.11
Successful Interferometer Test with Two Japanese 7-m Antennas
On August 11, an interferometer test using two Japanese 7-m antennas was conducted at the Operations Support Facility (OSF) at 2900 m asl and interference frin…
2011.08.11
Successful Interferometer Test with Sixteen 12-m Antennas
On August 6, an interferometer test was conducted at the Array Operations Site (AOS) at 5000 m asl and fringes of 120 baselines were successfully obtained with…
2011.07.22
Band 8 Manufacturing Readiness Review (MRR)
On June 29, the Manufacturing Readiness Review (MRR) for Band 8 (one of the three receiver cartridges to be developed and manufactured by Japan) was held at t…
2011.06.06
Successful Interferometer Test with Japanese 7-m antenna and 12-m antenna
On May 30, radio waves emitted by a variable star VX Sagittarii were collected by a Japanese 7-m antenna and a 12-m antenna, and interference fringes were suc…
2011.04.26
First Successful Interferometer Test with Two Japanese Antennas
On March 10, 2011, at the Operations Support Facility (OSF) at 2900 m asl., radio waves emitted by the Sun were collected by two 12-m Japanese antennas and in…
2010.11.12
Development of the reference light source with the world highest quality - successful generation of optical signals with high stability, accuracy, and speed -
The National Institute of Information and Communications Technology (NICT) and the National Astronomy Observatory of Japan (NAOJ) have successfully developed a…
2010.07.30
Japanese ALMA Receivers Received the First Spectrum
Two different types of the receivers Japan developed for ALMA (Atacama Large Millimeter/submillimeter Array) successfully received the first spectrum from the …
2010.01.05
Successful Three-Antenna Interferometry at ALMA 5000-meter Site
The Atacama Large Millimeter/submillimeter Array (ALMA) has passed a key milestone crucial to producing the high-quality images that will be the trademark of t…
2009.09.18
Japanese ALMA antenna became the first to arrive at the ALMA 5000 m site.
Japanese ALMA antenna became the first to arrive at the ALMA 5000 m site. Japanese ALMA antenna became the first to arrive at the ALMA 5000 m site. The ALMA (…
2009.06.16
World's Highest Performance Submillimeter (terahertz) Receiver
- Band 10, the highest frequency receiver in ALMA, was successfully developed -
The research team led by Yoshinori Uzawa (ALMA Band 10 Team Leader at the National Astronomical Observatory, Advanced Technology Center) successfully develope…
2008.12.19
Handover of the First Antenna to the Joint ALMA Observatory
-ALMA observatory equipped with its first 'eye'-
An ACA (Atacama Compact Array) 12-m antenna was handed over as the first antenna to the Joint ALMA Observatory, which operates ALMA (Atacama Large Millimeter/s…
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, …
2007.08.09
Assembly of three Japanese antennas started at the OSF
ALMA antennas are assembled at the OSF (Operations Support Facility) at 2900 meters, and completed antennas are transported by a dedicated transporter to the A…
2004.09.24
NINS, ESO, and NSF signed the Agreement for the Construction of the Enhanced ALMA
On September 14, the National Institutes of Natural Sciences (on behalf of Japan), the National Science Foundation (on behalf of North America), and the Europ…
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