NASA/JPL/ASU THEMIS Intro: Light, camera, action!.
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Transcript of NASA/JPL/ASU THEMIS Intro: Light, camera, action!.
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NASA/JPL/ASU
THEMIS Intro:
Light, camera, action!
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NASA/JPL
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Mars Odyssey
NASA/JPL
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MARS ODYSSEYArrived at Mars October 2001
Mapping Mars since February 2002
NASA/JPL
Exploring for 5 years!
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NASA/JPL
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THEMIS
NASA/JPL
Th________________
Em_______________
I_________________
S_________________
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THEMIS
NASA/JPL
Thermal
Emission
Imaging
System
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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
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It’s all about light – The Electromagnetic Spectrum
The SUN radiates and creates different types of
LIGHT!
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Higher energy Lower energy
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THEMIS VisibleFilters
There are 10 IR Filters/bands
BLUE GREEN RED IR 1 IR 2
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What Does a filter do?
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What filter would you use to take an image of Mars?
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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
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NASA/JPL/MSSS
How much of Mars is imaged in a THEMIS image?
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What is a pixel?
___m
___m
18
18
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