MAGNETIC FIELD MEASUREMENTS ARE ESSENTIAL FOR NEAR-EARTH INTERPLANETARY AND PLANETARY MISSIONS AND FOR THE STUDY AND FUTURE FORECASTING OF SPACE WEATHER. RECENT INSTRUMENTAL ADVANCEMENTS HAVE FOCUSED ON MAKING SMALLER AND LOW POWER INSTRUMENTS TO ENABLE CONSTELLATION MISSIONS OF MANY LOW-COST SPACECRAFT. MAGNETIC FIELD INSTRUMENTS ARE NOW SMALL AND LIGHT ENOUGH TO BE CARRIED BY CUBESATS OF ~10X10X30 CM. HOWEVER THE MAGNETIC FIELD SENSORS NEED TO BE HELD AWAY FROM THE MAGNETIC NOISE OF THE SPACECRAFT ON LONG DEPLOYABLE BOOMS AND NO ROBUST AND RELIABLE SOLUTION CURRENTLY EXISTS FOR CUBESATS. THE EX-ALTA 1 CUBESAT LAUNCHED IN MAY 2017 CARRIED A MINIATURE SCIENTIFIC CALIBER FLUXGATE MAGNETOMETER AND A ~60 CM DEPLOYABLE BOOM. THE DESIGN IS SMALLER AND LIGHTER THAN THE EXISTING STATE OF THE ART AND IS EASILY ACCOMMODATED AS IT MOUNTS ON THE OUTSIDE OF THE SPACECRAFT. HOWEVER ONLY EXTREMELY LIMITED PRE-LAUNCH TESTING WAS POSSIBLE ON THE EX-ALTA 1 SPACECRAFT ATTITUDE CONTROL ISSUES HAVE PREVENTED ANALYSIS OF THE ON-ORBIT PERFORMANCE OF THE BOOM AND TECHNICAL RISKS WERE IDENTIFIED WITH THE ELBOW JOINT. THE LIGHTWEIGHT BOOM DESIGN CANNOT DEPLOY IN SURFACE GRAVITY AND IS NOT SUITABLE FOR TRADITIONAL DE-WEIGHTING TECHNIQUES SO ITS DEPLOYMENT MUST BE TESTED IN MICRO-G CONDITIONS. WE THEREFORE PROPOSE TO VALIDATE AND CHARACTERIZE TWO IMPROVED VARIATIONS OF THIS CUBESAT MAGNETOMETER BOOM THROUGH A PARABOLIC FLIGHT EXPERIMENT WHERE WE REPEATEDLY DEPLOY THE TWO BOOMS AND TRACK THEIR DEPLOYMENT AND FINAL ORIENTATION USING MOTION CAPTURE. MICRO-G CONDITIONS WILL BE PROVIDED BY PARABOLIC FLIGHTS OF A B727-200 AIRCRAFT OPERATED BY THE ZERO GRAVITY CORPORATION. THE REPEATABILITY AND RELIABILITY OF THE CUBESAT MAGNETOMETER BOOMS WILL BE ASSESSED USING TWO EXPERIMENTAL APPARATUS COMPRISING THE PROTOTYPE BOOMS MASS-EQUIVALENT CUBESAT STRUCTURES AND OPTICAL TRACKING AND GYROSCOPE INSTRUMENTATION TO CAPTURE THE BOOM'S MOTION. TWO APPARATUS ALLOW US TO MAKE USE OF ALL AVAILABLE MICRO-G INTERVALS AS ONE APPARATUS CAN BE RESET WHILE THE OTHER IS BEING TESTED. EACH APPARATUS WILL BE RELEASED BY A HUMAN OPERATOR ONCE THE AIRPLANE ENTERS MICRO-G CONDITIONS AND WILL REMOTELY COMMANDED TO DEPLOY ITS BOOM ONCE THE SPACECRAFT IS FREE FLOATING. THE TEST APPARATUS WILL BE RECOVERED USING A TETHER BEFORE ACCELERATION RESUMES AND THEN RESET DURING AIRPLANE REPOSITIONING AND THE SUBSEQUENT PARABOLA. THE BOOMS TESTED UNDER THIS PROPOSAL WHEN COMBINED WITH AN EXISTING MINIATURE FLUXGATE MAGNETOMETER WILL ENABLE ROBUST AND LOW-COST MULTIPOINT MAGNETIC FIELD MEASUREMENTS THROUGH CUBESAT CONSTELLATIONS. THIS DIRECTLY ADDRESSES THE 2015 NASA TECHNOLOGY ROADMAP PRIORITY FOR "TECHNOLOGIES THAT ALLOW HIGH-STABILITY MAGNETIC FIELD MEASUREMENTS TO BE MADE IN DISTRIBUTED SYSTEMS" (TA 8.3.1.3).