LEGRI

The Low Energy Gamma-Ray Imager (LEGRI) was a payload for the first mission of the Spanish MINISAT platform, and active from 1997 to 2002. The objective of LEGRI was to demonstrate the viability of HgI₂ detectors for space astronomy, providing imaging and spectroscopical capabilities in the 10-100 keV range.
LEGRI was successfully launched on April 21, 1997, on a Pegasus XL rocket. The instrument was activated on May 19, 1997. It was active until February 2002.^[1]

The LEGRI system included the Detector Unit, Mask Unit, Power Supply, Digital Processing Unit, Star Sensor, and Ground Support Unit.^[1]

The LEGRI consortium included:^[1]

University of Valencia
University of Southampton
University of Birmingham
Rutherford Appleton Laboratory
Centro de Investigaciones Energéticas
Medioambientales y Tecnológicas (Ciemat)
INTA

References

1 2 3 LEGRI (Low Energy Gamma Ray Imager)

External links

Low Energy Gamma-Ray Imager (LEGRI) on the internet

Space observatories

Current	AGILE AMS-02 Astrosat CALET Chandra (AXAF) DAMPE Fermi Gaia Hinode (Solar-B) HiRISE Hisaki (SPRINT-A) Hitomi (Astro-H) Hubble INTEGRAL IBEX IRIS Kepler LISA Pathfinder MAXI MOST NEOSSat NuSTAR Odin PAMELA R/HESSI SDO SOHO SOLAR Spektr-R Spitzer Swift TUGSAT-1 & UniBRITE-1 WISE XMM-Newton

Planned	HXMT (2016) ISS-CREAM (2016) NICER (2016) CHEOPS (2017) Nano-JASMINE (2017) Spektr-RG (2017) TESS (2017) James Webb (JWST) (2018) K-EUSO (2019) Public Telescope (PST) (2019) iWF-MAXI (2019+) Astro-1 Telescope (2020) Euclid (2020) Spektr-UV (2021) SVOM (2021) Space Solar Telescope Solar-C (2023) PLATO (2024) ATHENA (2028) eLISA (2034)

Proposals	ATLAST DIOS EXCEDE Fresnel Imager FINESSE FOCAL HDST Hypertelescope LiteBIRD NEOCam New Worlds Mission NGHXT NRO donation to NASA Solar-D SPICA THEIA WFIRST EUSO

Completed	Akari (Astro-F) (2006–2011) ALEXIS (1993–2005) ATM (1973–1974) ASCA (Astro-D) (1993–2000) Astro-1 (BBXRT HUT) (1990) Astro-2 (HUT) (1995) Astron (1983–1989) ANS (1974–1976) BeppoSAX (1996–2003) CHIPSat (2003–2008) Compton (CGRO) (1991–2000) COROT (2006–2013) Cos-B (1975–1982) COBE (1989–1993) EPOCh (2008) EPOXI (2010) EXOSAT (1983–1986) EUVE (1992–2001) FUSE (1999–2007) Kvant-1 (1987–2001) GALEX (2003–2013) Gamma (1990–1992) Ginga (Astro-C) (1987–1991) Granat (1989–1998) Hakucho (CORSA-ｂ) (1979–1985) HALCA (MUSES-B) (1997–2005) HEAO-1 (1977–1979) Herschel (2009–2013) Hinotori (Astro-A) (1981–1991) HEAO-2 (Einstein Obs.) (1978–1982) HEAO-3 (1979–1981) HETE-2 (2000–2007?) Hipparcos (1989–1993) IUE (1978–1996) IRAS (1983) IRTS (1995–1996) ISO (1996–1998) IXAE (1996–2004) Kristall (1990–2001) LEGRI (1997–2002) MSX (1996–1997) OAO-2 (1968–1973) OAO-3 (Copernicus) (1972–1981) Orion 1/2 (1971/1973) Planck (2009–2013) RELIKT-1 (1983–1984) ROSAT (1990–1999) Rossi X-ray (RXTE) (1995–2012) SAMPEX (1992–2004) SAS-B (1972–1973) SAS-C (1975–1979) Suzaku (Astro-EII) (2005–2015) Taiyo (SRATS) (1975–1980) Tenma (Astro-B) (1983–1985) Uhuru (1970–1973) WMAP (2001–2010) 1st mission WISE (2009–2011) Yokoh (Solar-A) (1991–2001)

Lost	e.g. launch failures: OAO-1/OAO-B (1966/1970) CORSA (1976) ABRIXAS (1999) HETE (1996) WIRE (1999) Astro-E (2000)

Completed	hibernating after mission: SWAS (1998–2005) TRACE (1998–2010)

Cancelled	Astro-G Constellation-X Darwin Destiny EChO Eddington FAME GEMS IXO JDEM LOFT SIM & SIMlite SNAP TAUVEX TPF XEUS

See also	Great Observatories program List of space telescopes List of proposed space observatories

Category

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