Radio-Astronomical Satellite "ASTRO-G" Topics

Topics List

Dec. 21, 2011 Updated
ASTRO-G project suspension

JAXA decided to suspend the Radio-Astronomical Satellite "ASTRO-G" project because we found a technological difficulty for a high-precision 9-meter deployment antenna, which is the key device for observations. The satellite has been developed to achieve high-resolution astronomical observations. The currently available antenna specular accuracy does not allow us to gain the most important scientific results. Also, even if we downgrade our scientific target to an attainable range, it became clear that we require far more time and money than for the original plan.
Considering all the above conditions, we have decided to halt the project.

Feb. 2, 2010 Updated
Making all-out efforts for a technical solution for a large deployable antenna

A high precision 9-meter large deployment antenna is the key for observations, but its development is technically very difficult. We have already identified some issues that we have to overcome.
We are now making our utmost efforts to study technical solutions to be confident on our ultimate solution.

Sep. 17, 2008 Updated
ASTRO-G LDR scaled-down model electric test

An antenna pattern measurement test using a scaled down model of the large deployable antenna (LDR) was held for the ASTRO-G at the Radio Test Building at the JAXA Tsukuba Space Center. The LDR is one of the basic technologies for satellites. The photo shows the Tsukuba's test facility called a "compact range," and the ASTRO-G LDR scaled model (golden object looks like an umbrella on the upper right) under testing.