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Photo of Johns Hopkins APL’s Camera Reveals Surprise for NASA’s Lucy Mission in First Asteroid Encounter
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Johns Hopkins APL’s Camera Reveals Surprise for NASA’s Lucy Mission in First Asteroid Encounter

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Instruments

Innovative Instrumentation

APL’s long heritage of space technology innovation reaches back six decades, and includes building more than 300 specialized instruments. APL instruments have provided the first images of Saturn’s magnetic field; contributed to the discovery of ancient water across Mars, delivered the first close-up views of Pluto and its moons; and helped determine when humankind – through Voyager 1 – left the solar system for the first time.

Optical Instruments

APL optical instruments range from telescopic cameras that deliver high-resolution images of worlds across the solar system, to imaging spectrometers that can “read” hundreds of colors in reflected sunlight to detect the mineral makeup of a planet’s surface.

Learn more about LORRI
Working on the LORRI instrument in APL's clean room

LORRI

Mission

New Horizons

Destinations

Pluto, Kuiper Belt Objects & Comets
The Long Range Reconnaissance Imager (LORRI) is a telescopic camera built to enable distant imaging of the farthest regions of the solar system.
Learn more about L'LORRI
Lucy Spacecraft approaching a Trojan asteroid with L'LORRI instrument.

L'LORRI

Mission

Lucy

Destinations

Asteroids
The Lucy-Long Range Reconnaissance Imager (L’LORRI) is a telescopic camera built to image Jupiter’s Trojan asteroids.
Learn more about GUVI
Composite of the aurora, as seen by GUVI, superimposed over an image of Earth

GUVI

Mission

TIMED

Destinations

Earth
The Global Ultraviolet Imager (GUVI) observes Earth’s thermosphere, ionosphere and mesosphere.
Learn more about MISE
Rendering of the Europa Clipper spacecraft nearing Europa

MISE

Mission

Europa Clipper

Destinations

Outer Moons
The Mapping Imaging Spectrometer for Europa (MISE) will map elements on the surface of Jupiter's icy moon.
Learn more about EIS
Rendering of the Europa Clipper spacecraft nearing Europa

EIS

Mission

Europa Clipper

Destinations

Outer Moons
The Europa Imaging System (EIS) will map and image Jupiter’s icy moon Europa in unprecedented resolution.
Learn more about DRACO
Engineers in protective clothing working on the DRACO instrument

DRACO

Mission

DART

Destinations

Asteroids
The Didymos Reconnaissance and Asteroid Camera for Optical navigation (DRACO) provides asteroid imaging and spacecraft navigation on the first planetary defense mission.
Learn more about CRISM
Science image of Mars' surface observed by CRISM.

CRISM

Mission

Mars Reconnaissance Orbiter

Destinations

Terrestrial Planets
The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) maps minerals on the Martian surface to study how the crust formed and was altered by water.

Particle Instruments

APL develops devices – like highly sensitive mass spectrometers – that can determine a charged particle’s elemental composition by measuring how long it takes the particle to fly through the instrument.

Learn more about ULEIS
ACE spacecraft with ULEIS instrument in space around Sun

ULEIS

Mission

ACE

Destinations

Sun & Solar Wind
The Ultra Low Energy Isotope Spectrometer (ULEIS) determines the range and abundances of isotopes during massive solar events.
Learn more about IMAP-Ultra
IMAP Rendering

IMAP-Ultra

Mission

IMAP

Destinations

Interstellar Medium, Sun & Solar Wind
Advancing designs built to study energetic particles around Earth and Saturn, IMAP-Ultra will image energetic particles from the edge of the solar system, providing detailed visuals of what happens when the Sun’s solar wind meets interstellar space. IMAP-Ultra is one of 10 instruments that will be included on the spacecraft.
Learn more about SIS
Solar Orbiter in space around the Sun

SIS

Mission

Solar Orbiter

Destinations

Sun & Solar Wind
The Suprathermal Ion Spectrograph (SIS) determines elements by measuring how long it takes a particle to move through the instrument.
Learn more about PEPSSI
Rendering of Pluto and the solar wind particles blowing over it

PEPSSI

Mission

New Horizons

Destinations

Pluto, Kuiper Belt Objects & Comets, Sun & Solar Wind
The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) is the most compact, lowest-power directional energetic-particle spectrometer flown in space.
Learn more about PIMS
Rendering of the Europa Clipper spacecraft nearing Europa

PIMS

Mission

Europa Clipper

Destinations

Giant Planets, Outer Moons
The Plasma Instrument for Magnetic Sounding (PIMS) will use space physics to investigate Europa’s ice shell and ocean.
Learn more about JoEE/JENI
JUICE exploring Jupiter and the four Galilean moons Io, Europa, Ganymede and Callisto

JoEE/JENI

Mission

JUICE

Destinations

Outer Moons, Giant Planets
The Jovian Energetic Neutrals and Ions (JENI) and the Jovian Energetic Electrons (JoEE) detectors will "see" the invisible, super-heated plasma and gas around Jupiter and its icy moons.
Learn more about LECP
Voyager spacecraft with Low-energy Charged Particle instrument in solar wind

LECP

Mission

Voyager

Destinations

Sun & Solar Wind, Interstellar Medium
The Low-Energy Charged Particle (LECP) detectors have measured ions and electrons in the outer solar system and beyond.
Learn more about JEDI
Jupiter Energetic-particle Detector Instrument in space

JEDI

Mission

Juno

Destinations

Giant Planets
Jupiter Energetic Particle Detector Instrument (JEDI) studies Jupiter’s magnetosphere and aurora.
Learn more about EPI-Lo
EPI-Lo instrument.

EPI-Lo

Mission

Parker Solar Probe

Destinations

Sun & Solar Wind
The Energetic Particle Instrument-Low Energy (EPI-Lo) is investigating the Sun’s energetic particles from an unprecedented distance.
Learn more about EPD-EIS
Artist depiction of four MMS spacecraft in space around Earth with its magnetosphere shown

EPD-EIS

Mission

MMS

Destinations

Earth
The Energetic Ion Spectrometer (EIS) measures energetic particles to study magnetic reconnection and acceleration in Earth’s magnetosphere.
Learn more about EPAM
The ACE mission spacecraft orbiting the Sun

EPAM

Mission

ACE

Destinations

Sun & Solar Wind
The Electron, Proton and Alpha Monitor (EPAM) is designed to detect energetic particles from the Sun, the galaxy and interstellar space.

Gamma-Ray and Neutron Instruments

Gamma-ray spectroscopy can infer composition tens of inches beneath a planetary body, either remotely from orbit or while sitting directly on the surface, and quantify the elements present throughout that depth.

Learn more about MEGANE
Rendering of the MMX spacecraft approaching the Martian moon Phobos

MEGANE

Mission

MMX

Destinations

Terrestrial Planets
The Mars-moon Exploration with GAmma rays and NEutrons (MEGANE) spectroscopy instrument will study the Martian moon Phobos.
Learn more about Psyche GRNS
Rendering of the Psyche spacecraft observing asteroid Psyche

Psyche GRNS

Mission

Psyche

Destinations

Asteroids
The Gamma-Ray and Neutron Spectrometer (Psyche GRNS) instrument will determine the composition of the asteroid Psyche.
Learn more about DraGNS
An illustration of the Dragonfly rotorcraft on the dusty surface of Titan, with dark mountains, a hazy atmosphere and the Sun in the background

DraGNS

Mission

Dragonfly

Destinations

Outer Moons
The Dragonfly Gamma-ray and Neutron Spectrometer (DraGNS) will measure the surface composition of Titan.

Other Instruments

APL develops radar and other sensors to map surfaces and assess conditions on and above our Moon and other worlds.

Learn more about DraGMet
An illustration of the Dragonfly rotorcraft on the dusty surface of Titan, with dark mountains, a hazy atmosphere and the Sun in the background

DraGMet

Mission

Dragonfly

Destinations

Outer Moons
The Dragonfly Geophysics and Meteorology Package (DraGMet) is a suite of geophysical and meteorological sensors to assess conditions on Saturn's moon Titan.
Learn more about Mini-RF
Mini-RF instrument observing the Moon's surface.

Mini-RF

Mission

LRO

Destinations

Moon
Mini-RF data is advancing our understanding of the lunar poles — prime targets for humankind’s return to the Moon.
Learn more about Vector Magnetometers
A light-shaded swirl on the Moon's surface

Vector Magnetometers

Mission

Lunar Vertex

Destinations

Moon
A small rover that will explore as much as 2 kilometers (just over a mile) of one of the Moon's most famous magnetic "swirls."