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#926984 - 13/06/2012 17:09
NuSTAR
Pegasus/NuSTAR Launch Set for Noon
Wed, 13 Jun 2012 04:41:11 PM UTC+0200
Launch is scheduled for noon EDT, about 30 minutes after the opening of today's four-hour launch window for the Pegasus XL rocket carrying NASA's NuSTAR spacecraft. Weather is now 100 percent "go" for launch.
The Orbital Sciences' L-1011 aircraft that will carry the Pegasus is preparing to taxi out to the end of the runway for an 11 a.m. take off from Kwajalein Atoll. The drop location for the Pegasus is 117 nautical miles south of Kwajalein, at an altitude of 39,000 feet over the Pacific Ocean. This location is 6.75 degrees above the equator. Spacecraft separation occurs 13 minutes, 14 seconds after deployment from the L-1011.
NuSTAR is scheduled to launch no earlier than 8:30 a.m. PDT (11:30 a.m. EDT) on June 13 from Kwajalein Atoll in the Marshall Islands. The spacecraft will lift off on an Orbital Sciences Pegasus XL launch vehicle, released from an aircraft flying south of Kwajalein.
NASA TV
Watch live coverage and commentary as NASA launches the Nuclear Spectroscopic Telescope Array (NuSTAR) observatory on Wednesday, June 13.
The observatory, a black-hole hunter with sharp X-ray eyes, will be launched from Kwajalein Atoll in the central Pacific Ocean. NuSTAR is attached to an Orbital Sciences Corporation Pegasus XL rocket, which is mounted on the bottom of an L-1011 Stargazer aircraft. The airplane will take off from the atoll and release the rocket, which will ignite its engines in the air.
Wikipedia - Nuclear Spectroscopic Telescope Array (NuSTAR)
Nuclear Spectroscopic Telescope Array (NuSTAR) is a planned space-based X-ray telescope that will use a Wolter telescope to focus high energy X-rays at 5 to 80 keV from astrophysical sources, especially for nuclear spectroscopy. It is the eleventh mission of the NASA Small Explorer satellite program (SMEX-11) and the first space-based direct-imaging X-ray telescope at energies beyond those of the Chandra X-ray Observatory and XMM-Newton. The planned mission launch scheduled for 21 March 2012 was postponed by software issues with the launch vehicle.
Optics: NuSTAR employs two grazing incidence focusing optics each of which consists of 133 concentric shells. The particular innovation enabling NuSTAR is that the optics are coated with depth-graded multilayers (alternating atomically-thin layers of a high-density and low-density material); with NuSTAR's choice of Pt/SiC and W/Si multilayers, this enables reflectivity up to 79keV (the platinum K-edge energy). The optics have a 10.15-metre focal length, and so are held at the end of a long deployable mast; a laser metrology system is used to determine the exact relative positions of the optics and the focal plane at all times, so that each detected photon can be mapped back to the correct point on the sky even if the optics and the focal plane move relative to one another during an exposure.
Spiegel - Nasa-Teleskop "NuStar" Mini-Späher soll Schwarze Löcher erkunden.
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Pegasus Countdown 101 NuSTAR Lauch News L-1011 Aircraft Takes Off, Pegasus/NuSTAR Ready for Launch
Wed, 13 Jun 2012 05:01:41 PM UTC+0200
The Orbital Sciences' L-1011 aircraft carrying the Pegasus XL rocket has taken off from the runway at Kwajalein Atoll. Launch is set for noon EDT. The drop location for the Pegasus is 117 nautical miles south of Kwajalein, at an altitude of 39,000 feet over the Pacific Ocean. This location is 6.75 degrees above the equator. The NuSTAR spacecraft separation occurs 13 minutes, 14 seconds after deployment from the L-1011.
Weather is 100 percent "go" for launch.
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T-5 minutes: begin of terminal countdown
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Countdown: 3 - 2 - 1 - Liftoff
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18:09 Stage 3 burn starts (~70 seconds)
18:10 Stage 3 burn complete
18:11 Vehicle is now in orbit
18:13 Spacecraft separation
18:15 Solar Array Deployment has started (~ 5 minutes)
18:22 Solar Array Deployment complete
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