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LEGRI

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The

Low Energy Gamma-Ray Imager

(

LEGRI

) was a payload for the first mission of the Spanish

platform, and

active from 1997 to 2002. The objective of LEGRI was to demonstrate the viability of

detectors for space

, 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.

The LEGRI system included the Detector Unit, Mask Unit, Power Supply, Digital Processing Unit, Star Sensor, and Ground

Support Unit.

The LEGRI consortium included:

Medioambientales y Tecnológicas (Ciemat)

INTA

References

[

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External links

[

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on the internet

Operating

(since 2018)

(since 2020)

(since 2006)

(since

2018)

(since 1994)

(since 2024)

(since 2001)

(since 2022)

(since 2025)

(since 2018)

(since 2015)

constellation

(since 2013)

(since

2021)

(since 2019)

(since 2015)

(since 2023)

(since

2021)

(since 2005)

(since 1990)

(since 2006)

(since 2013)

(since 2001)

(since 2010)

(since 1995)

(since 2004)

(since 2018)

(since 2024)

(since 2023)

(since 2022)

(since 2015)

(since 2006)

(since 2013)

(since 2010)

(since 1995)

(since 2020)

(since 2006)

(since 2004)

(since 2024)

(since 2025)

and

(since 2015)

(since 1999)

(since 2015)

(since 2024)

(since 2017)

(since 2008)

(since 2020)

(since 2021)

(since 2019)

(since 2024)

(since 2004)

(since 2017)

(since 2009)

(since 2018)

(since

2017)

(since 2012)

(since 2022)

(since 2023)

(since

2024)

(since 1999)

Other

(particle or

unclassified)

(since 1997)

(since 2011)

(since 2015)

(since 2008)

(since 2017)

(since 2019)

(since 1995)

(since 2020)

(since 2006)

Planned

(2026–2027)

(2026)

(2027)

(2028)

(2030)

(2031)

(2032)

(2033)

(2035)

Retired

(2007–2024)

(2006–2011)

(1993–2005)

(1962–1972)

(1962,

1964)

(1964)

(1967–1969)

(1971–1972)

(1974–1980)

(1979–

1982)

(2017–2019)

(1973–1974)

(1993–2000)

(1990)

(

)

(1995)

(1983–1991)

(1974–1976)

(1996–2003)

(2003–

2008)

(1991–2000)

(2006–2013)

(1975–1982)

(1989–1993)

(2017–2019)

(1993)

(2008)

(2010)

(1961)

(1983–1986)

(1992–2001)

(1999–2007)

(2013–2025)

(2003–2013)

(1990–1992)

(1987–1991)

(1989–1998)

(1979–1985)

(1997–2005)

(1977–1979)

(2009–2013)

(1981–1991)

(2013–2023)

(1978–1982)

(1979–1981)

(2000–2008)

(1989–1993)

(2024)

(2002–2025)

(1983)

(1995–1996)

(1996–1998)

(1978–1996)

(1996–2004)

(2009–2018)

(1990–2001)

(1987–2001)

(1997–2002)

(2015–2017)

(2003–2019)

(1996–1997)

(2016–2019?)

(1968–1973)

(1972–1981)

(1971)

(1973)

(2006–2016)

(2018)

(2009–2013)

(1983–1984)

(2002–2018)

(1990–1999)

(1995–2012)

(1992–2004)

(1972–1973)

(1975–1979)

(2008–2017)

(1979–1985)

(2011–2019)

(2003–2020)

(2005–

2015)

(1975–1980)

(1983–1985)

(1970–1973)

(1959)

(2001–2010)

(2009–2024)

(1991–2001)

Hibernating

(Mission completed)

(1998–2005)

(1998–2010)

Lost/Failed

(1966)

(1970)

(1976)

(2012–2013)

(1965)

(1999)

(1996)

(1999)

(2000)

(2014–2015)

(2016)

Cancelled

(2010 documentary)

(2023 documentary)

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