A new Space Weather Observatory in Tamanrasset Dr T. Abdelatif Solar Physics Division Centre de recherches en Astronomie, Astrophysique et Géophysique.

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Presentation transcript:

A new Space Weather Observatory in Tamanrasset Dr T. Abdelatif Solar Physics Division Centre de recherches en Astronomie, Astrophysique et Géophysique

CRAAG Centre de Recherche Astronomie Astrophysique et Géophysique Created in 1980 fusion of two institutions: the Algiers Observatory (1892) and the IMPGA (1930) Three main areas of research Seismology Geophysics Astrophysics

Astrophysics CRAAG Stellar and High Energy Astrophysics DivisionStellar and High Energy Astrophysics Division – –Asterosismology – –High energy Astrophysics – –Stellar variability – –Data Analysis Solar Physics DivisionSolar Physics Division – –Solar Activity studies – –Heliosismology – –Ionospheric research – –High angular solar resolution

Algiers Observatory

Algiers Observatory (Historic) 1846 : First observations in Astronomy started in Kouba (Algiers) 1886 : Construction of the Observatory in Bouzareah: Highest point in Algiers It is one of the first Observatory in the African continent Four instruments : 1.La lunette méridienne de Gautier 2.La Lunette Coudé de Loewy 3.L’Astrographe de Gautier 4.Le télescope de Foucault

Algiers Observatory

Space Weather in Algeria Thru the ISWI (International Space Weather Initiative) the CRAAG participate to several research programs: 1.AMBER: One magnetic station in Medea (100 km south of Algiers) 2.AWESOME: One VLF station near Algiers 3.INTERMAGNET: One magnetic station in Tamanrasset (1900 Km south of Algiers) 4.GPS_Africa: one GPS station International GNSS Service in Tamanrasset Tamanrasset host also a longue range seismic station thru the GEOSCOPE program

Research Unit In Tamanrasset

Scientific Needs Complete ignorance of ionospheric condition in southern Algerian Very few data Proximity to the equatorial electrojet Inside GNSS January 2009

New Space Weather station in Tamanrasset We have decide to install different instruments to follow up the activity of the sun as well as the ionosphere: Flare patrol telescope Radio spectrometer Digital Ionosonde TEC and scintillation Monitor VLF receiver These instruments will complete the other instruments already in place. The data will be completed with satellite data.

Flare Patrol Telescope Similar to the FMT Hida Observatory in Japan (1992 in Peru in 2009 Multiple refractors to observe the full disk sun at different wavelengths around H-alpha absorption line and in different modes 1 arsec resolution with high rate of acquisition. Synoptic observations and the three-dimensional velocity field of moving features.

Flare Patrol Telescope Specifications: 3 x Telescopes D 10mm, F:1600mm Ha6562.8/0.3 A Ha -0.8 A6562.0/0.3 Å Ha +0.8 A6563.6/0.3 Å Telescope + Filter Wheel D 10mm, F:1600mm Continuum6100.0/60 Å Calcium II K line3933.0/2.0 Å Helium D /0.4 Å H Alpha6562.8/0.8 Å Telescope 2xfocals H alpha /0.3 Å Telescope tracking

CDD Cameras Resolution 4 MPix 12bit A frame rate of 7 frames/sec: Frame selection Record a flare event

Others instruments 1.Radio spectrometer : diagnostics of solar activity, such as solar flares and CMEs, instrument type CALISTO 2.Digital Ionosonde : with 4 receivers: capability to mesure ionospheric dopler drift. 3.TEC and scintillation Monitor measure of the TEC and the scintillation of the GPS signal 4.VLF receiver : measurement of the D layer of the Ionosphere.

Misolfa  n Angle de s é paration Camera CCD Zones d ’ analyse des mouvements du limbe D é placement du limbe et de la zone d ’ analyse au cours de l ’ ann é e

Altitude

Tamanrasset Research Unit

City of Tamanrasset -CRAAG

Source NOAA ( )

New site Assekrem m 80 km from Tam

Assekrem

Thank you