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2008.07.23

Flaming Sunset Clouds

Tags: ALMA Topics

Today it was calm and windless in contrast to a sand storm with a wind velocity of 20m/s or higher on the previous day. Clouds were growing thick from the afte…

2008.05.29

Sheep Clouds across the Sky

Tags: ALMA Topics

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 …

2008.05.09

Current Status of OSF

Tags: ALMA Topics

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…

2008.02.27

Antenna Surface Adjustment

Tags: ALMA Discoveries

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

Tags: ALMA Topics

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

Tags: ALMA Discoveries

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…

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