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About Odin

Odin is a multinational atmosphere-studying satellite mission which launched on 20 February 2001 and remains operational.

Mission Parameters
Orbit Height620 km
Orbit TypeSun-synchronous polar
Orbit Inclination98.2°

Odin is part of ESA's Third Party Missions programme, in which ESA has an agreement to distribute data products from the mission.

Odin Objectives

The Odin mission objectives are mainly astronomy and aeronomy applications (atmospheric research: observation of stratospheric ozone chemistry, mesospheric ozone science, summer mesospheric science, coupling of atmospheric regions).

Odin Instruments

SMR (Submillimeter wave Radiometer)

SMR is a passive microwave limb sounder.

SMR Instrument Specifications
TypeSingle sideband heterodyne receivers (use of InP material)


118.25 - 119.25 GHz, 486.1 - 503.9 GHz, 541 - 580.4 GHz


100 MHz to 1 GHz


0.1 MHz to 1 MHz


1 K in 1 MHz with S/N = 5 after 15 minutes


Cooled Schottky mixers

Local Oscillators

LO based on Gunn diodes and frequency multipliers


Cooled HEMT low noise amplifiers


two hybrid autocorrelators and one AOS (Acousto-Optic Spectrometer)


OSIRIS (Optical Spectrograph and Infrared Imaging System)

OSIRIS is an ultra violet/visible light/infra red limb sounder.

OSIRIS Instrument Specifications
UV/VIS Spectrograph


280 - 800 nm

Wavelength Resolution

1 nm from 300-450 nm, < 2nm from 450-800 nm

Slit Orientation

perpendicular to the orbit plane (horizontal)


0.02º (vertical) x 0.75º (horizontal) corresponding to 1 km x 40 km on Earth

Spatial Resolution

1 km at the limb

Pointing Direction

aligned with SMR boresight

AD Converter

14 bit

Detector Type

Si CCD array (1353 x 286 pixels)

Species to be detected

O3, NO2, BrO, OCLO, O2, aerosols

IR Imager

Bandpass filter center wavelengths

1.263 µm, 1.273 µm, 1.520 µm

Bandwidth (FWHM)

10 nm (1.263 and 1.273), 40 nm (1.520)


118 km (vertical) x 2 km (horizontal)

Spatial Resolution

1 km in the vertical direction

Telescope Aperture

23 mm diameter

Detector Type (linear arrays with hybrid multiplexers)

3 InGaAs, each detector has 128 pixels

Detector Pointing Direction

in the orbit plane (vertical)

Detector Temperature

-40ºC (or less)

Temperature stability during exposure


Odin Data


The following data collections are available for the Odin mission:



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