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November 19, 2012 Updated

HINODE captured total solar eclipse over Australia

The Solar Physics Satellite “HINODE” captured the scene of the total solar eclipse in Australia. Its onboard X-ray telescope (XRT) took images of the sun gradually being covered by the moon at around 5:25 a.m. on Nov. 14, 2012 (Japan Standard Time), while the HINODE was flying over northern Australia. The moon appeared from the south, then moved in front of the sun toward the north western direction. The images show that the black moon was traveling with a bright solar corona behind it.
The largest eclipsed area observed by the HINODE was 99.3%, thus it was only one step shy of the total eclipse. The HINODE is flying very fast, at about 27,000 km per hour, thus its acquired data this time covers a portion of the partial sun eclipse for about 17 minutes. The HINODE also met the sun eclipse over the South American Continent four hours later, but its observation data there was also a partial eclipse.
The HINODE is also supporting total eclipse observations from Australia by measuring ultraviolet ray emissions from the corona using its onboard Extreme Ultraviolet (EUV) Imaging Spectrometer.

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Overview

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The HINODE, an observatory satellite to study the impact of the Sun on the Earth High expectations for new solar observations through international efforts by the United Kingdom, the United States and Japan

The HINODE (SOLAR-B), which is the successor to the orbiting solar observatory YOHKOH (SOLAR-A), was launched at 6:36 a.m. on September 23, 2006 (JST) by the M-V Launch Vehicle No.7 from the Uchinoura Space Center. The satellite had been coordinated and developed by the United Kingdom, the United States and Japan. Each party had the following responsibilities.
The satellite systems were developed by JAXA and Mitsubishi Electric Corporation. The large solar optical telescope (SOT) was jointly developed by the United States and Japan. JAXA and the National Astronomical Observatory of Japan worked on the telescope optics and the U.S. National Aeronautics and Space Administration (NASA) developed the focal-plane package (FPP). For the X-ray telescope (XRT), NASA provided grazing-incidence mirror optics, while JAXA provided the CCD camera. Development of the Extreme Ultraviolet (EUV) Imaging Spectrometer is being led by the Particle Physics and Astronomy Research Council (PPARC) of the United Kingdom with the support of NASA and JAXA.


The satellite mission’s main scientific aim is to unravel some of the mysteries and mechanisms of the activities taking place in the solar corona.

The Sun is the only fixed star available for us to observe in detail. By focusing on it, scientists hope to get a better understanding of the mechanisms of various processes taking place in the Universe. HINODE will carry a coordinated set of optical, X-ray, and EUV instruments that will perform highly accurate measurements of magnetic fields, electrical currents and velocity fields in the solar atmosphere and corona. The result will be an improved understanding of the mechanisms of solar explosions, which will in turn greatly help us predict how solar events affect Earth. The satellite’s polar orbit will allow its instruments to stay in continuous contact with the Sun for nine months of the year. HINODE will operate for at least three years.


Major Characteristics

International Designation Code 2006-041A
Launch Date 06:36, September 23, 2006 (JST)
Launch Vehicle M-V-7
Location Uchinoura Space Center
Shape Approx. 1.6m x 1.6m x 4m
10m long from end to end of solar array paddles
Weight Approx. 900 kg
Orbiter Circular (Sun-synchronous polar)
Altitude Approx. 680 km
Inclination 98 degrees
Period 98 min