18350/18650 Chang’e Grey Damascus
18350/18650 Phobos Black Damascus
18350/18650 Surveyor Blue Damascus
18350/18650 Yohkoh Gold Damascus
18650 Voyager Silver Damascus
18650 Cassini Multicolor Damascus
18350 “Green Arrow” Damascus
18350 “Brownie” Damascus
18350 Damascus Limited Edition
Yohkoh (ようこう, Sunbeam in Japanese), known before launch as Solar-A, was a Solar observatory spacecraft of the Institute of Space and Astronautical Science (Japan),
in collaboration with space agencies in the United States and the United Kingdom.
It was launched into Earth orbit on August 30, 1991 by the M-3S-5 rocket from Kagoshima Space Center.
It took its first image on September 13, 1991 21:53:40.
The satellite was three-axis stabilized and in a near-circular orbit.
It carried four instruments: a Soft X-ray Telescope (SXT), a Hard X-ray Telescope (HXT), a Bragg Crystal Spectrometer (BCS), and a Wide Band Spectrometer (WBS).
About 50 MB were generated each day and this was stored on board by a 10.5 MB bubble memory recorder.
Because the SXT utilized a charge-coupled device (CCD) as its readout device, perhaps being the first X-ray astronomical telescope to do so, its “data cube” of images was both extensive and convenient, and it revealed much interesting detail about the behavior of the solar corona.
Previous solar soft X-ray observations, such as those of Skylab, had been restricted to film as a readout device.
Yohkoh therefore returned many novel scientific results, especially regarding solar flares and other forms of magnetic activity.
The mission ended after more than ten years of successful observation when it went into its “safehold” mode during an annular eclipse on December 14, 2001 20:58:33 and the spacecraft lost lock on the sun. Operational mistakes and other flaws combined in such a way that its solar panels could no longer charge the batteries, which drained irreversibly;
several other solar eclipses had successfully been observed.
On September 12, 2005 the spacecraft burned up during reentry over South Asia.
The time of reentry, as provided by the U.S. Space Surveillance Network, was 6:16 pm Japan Standard Time (JST).
Voyager 1 is a space probe launched by NASA on September 5, 1977. Part of the Voyager program to study the outer Solar System, Voyager 1 launched 16 days after its twin, Voyager 2. Having operated for 38 years, 9 months and 28 days, the spacecraft still communicates with the Deep Space Network to receive routine commands and return data. At a distance of 135 AU (2.02×1010 km) from the Sun as of June 2016,
it is the furthest spacecraft from Earth and the only one in interstellar space.
The probe’s primary mission objectives included flybys of Jupiter, Saturn, and Saturn’s large moon, Titan. While the spacecraft’s course could have been altered to include a Pluto encounter by forgoing the Titan flyby, exploration of the moon, which was known to have a substantial atmosphere, took priority. It studied the weather, magnetic fields, and rings of the two planets and was the first probe to provide detailed images of their moons.
After completing its primary mission with the flyby of Saturn on November 20, 1980, Voyager 1 began an extended mission to explore the regions and boundaries of the outer heliosphere. On August 25, 2012, Voyager 1 crossed the heliopause to become the first spacecraft to enter interstellar space and study the interstellar medium.
Voyager 1’s extended mission is expected to continue until around 2025, when its radioisotope thermoelectric generators will no longer supply enough electric power to operate any of its scientific instruments.