NASA/JPL/ASU

THEMIS Intro:

Light, camera, action!

NASA/JPL

Mars Odyssey

NASA/JPL

MARS ODYSSEYArrived at Mars October 2001

Mapping Mars since February 2002

NASA/JPL

Exploring for 5 years!

NASA/JPL

THEMIS

NASA/JPL

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THEMIS

NASA/JPL

Thermal

Emission

Imaging

System

Thermal Emission Imaging System (THEMIS)

2-IN-1 CAMERA1. Visible Imaging (VIS)

– Visible-light images with 18 meters per pixel resolution.

2. Infrared Imaging (IR)– The entire planet will be

mapped in the infrared at 100 meters per pixel resolution.

NASA/JPL

It’s all about light – The Electromagnetic Spectrum

The SUN radiates and creates different types of

LIGHT!

Higher energy Lower energy

THEMIS VisibleFilters

There are 10 IR Filters/bands

BLUE GREEN RED IR 1 IR 2

What Does a filter do?

What filter would you use to take an image of Mars?

THEMIS RAW VIS IMAGE

Each framelet is taken once per second.

Each framelet is shifted with respect to the others because Mars rotates underneath the spacecraft.

18 km

19 framelets

NASA/JPL/MSSS

How much of Mars is imaged in a THEMIS image?

What is a pixel?

___m

___m

18

18