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World Earthquake Report for Thursday, 24 September 2026
• Moderate mag. 4.3 earthquake - Madagascar: Mozambique Channel on Thursday, ...
• Small magnitude 3.9 earthquake hits near Hastings, Hastings District, Hawke...
• Volcano earthquake report for Thursday, 24 September 2026
• Light mag. 3.9 earthquake - South Pacific Ocean, 10.2 km south of Hastings,...
• Moderate magnitude 4.1 quake hits 31 miles southeast of Midland, Texas, Uni...
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#517820
Thu 15 Aug 2019 02:52:PM
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Joined: Feb 2001
Posts: 678,977
Launch Director
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Launch Director
Joined: Feb 2001
Posts: 678,977 |
Abstract: The WFIRST wide field instrument (WFI) includes a slitless spectrometer, which plays an important role in the WFIRST mission for the survey of emission-line galaxies. WFI is building engineering design and environmental test (EDU and ETU) units to reduce risk for the flight grism unit. We report here on successful build and test of the EDU grism. The four-element EDU grism consists of two prism elements and two diffractive elements that provide R700 dispersion. The elements were fabricated wi... Source: Alignment and Test of the Wide Fiel...RST) Engineering Design Unit (EDU) Grism
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Alignment and Test of the Wide Field Infrared Survey Telescope (WFIRST) Engineering Design Unit (EDU) Grism
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