Gallery BEXUS5

	The BEXUS5 insulation box made by Esrange personell.
	The payload structure.
	The experiment rack.
	An experiment PCB placed inside the rack.
	The Multi Purpose Experiment Gondola (MPEG) system placed inside the payload structure.
	A closeup on the MPEG platform. This is the third generation of reusable balloon experiment platforms built and developed by students Mikael Koivunen and Johannes Reldin. The development has been going on during a period of three years and it has been flown on two previous BEXUS flights. From the right one can see the 6 VECI nodes which is the actual interface between MPEG and the experiments. The seventh node is the LINA administrator node that sends and recieves commands an housekeeping data to and forth from the VECI nodes. Furthest to the left is the 3P Platform Power Provider and the batteries plus a massive DCDC-converter heatsink. The 3P supplies everything on board with stabilized power.
	The main payload platform E-GON during construction at Esrange. This platform will be hanging in the end of the flight train and the BEXUS5 payload among with others such as Esrange's high speed data downlink system E-LINK will be fastened on the floor of this. This is a new innovative way of flying balloon payloads making both the launching procedure and interfacing between payloads easier.
	Thomas Ott from the ASDS-experiment group, among with Ola Widell is performing measurments on the finished platform to gain an insight of where and how to place their experiment to the absolute center of rotation of the payload platform.
	An overview of the flight train similar to the one used during the flight. Starting from the right is the payload platform end then camera, GPS, beacon, radar deflector, piloting and ballast system and balloon.
	First steps of assembling the payload. This picture shows the fixture of the MMSP experiment fastened on top and inside the box MPEG is properly mounted.
	ASDS members Jimmy Lovén(front) and Christo Grigorov(back) currently in construction and bootloader programming of their Crumb128 module containing an Atmel AVR128 microcontroller among with some peripherial circuits.
	Jan Torgrimsson from the PEM experiment group does some inertial testing of the NTC-resistors and photodiodes that will be used. Four sensor PCB:s will be made and samples will be taken every second during the entire flight and the data is stored locally on four 256k SPI EEPROM:s.
	One of the sensor PCB:s mentioned above tested in a vacuum chamber at the Institute of Space Physics. The test was done to see if the lack of atmosphere would cause the NTC-resistor to selfheat and give out a higher temperature corresponding voltage to the AD-converter outside. The sensor endured an hour of vacuum testing without showing any tendenses of selfheating.
	A first test of the MPEG RS-422 communication used during flight. All experiment connection nodes are checked for correct functioning. Starting from the right we have the BEXUS box with MPEG inside and a node test circuit in front. One step to the left the powersupply that simulates the internal batteries during testing and on top of that a RS-422 to RS-232 converter. This is needed for interfacing with the computer running the Groundstation Control System GCS software.
	A closeup of the GCS software. It was made in 2004 by student Kjell-Edmund Ims as a part of the whole MPEG sustainable balloon gondola project. From GCS, every implemented feature of the MPEG-platform can be controlled in real time. This includes individual experiment power supply control and digital control signals. Individual monitoring of voltages, currents, over current warnings and short circuit warnings. Temperatures of DCDC-converters, batteries and environment. This among with a whole bunch of other features.
	Thomans Ott to the left and Laurent Aupin to the right in ASDS is testing the HMC2003 3-axis magnetometer from Honeywell with a special set/reset circuit which provides a very accurate magnetic field measurements not depending on temperature and amplifier offsets.
	The 8Mpixel camera used in the MMSP project gets fitted into its protective aluminum box. Under the golden space blanket one can find a stepper motor that provides exact control of in which direction the camera is pointed. Inside the box there is a similar stepper motor that controls the function knob to change between picture and movie sequences. There is also a solenoid that triggers the exposures.
	Christo Grigorov in ASDS performing some initial tests with the newly built accelerometer board and their microcontroller.
	Lukas Karlsson, Viktor Larsson(in behind) and Andreas Bofjäll to the right of FTC in deep concentration about what components to use.
	Andreas Bofjäll of FTC in work with soldering the components onto one of their three PCB:s.
	Student project manager Jörgen Hedin checks if everything looks fine with the communication between the MPEG platform and the groundstation software
	This is the BEXUS5 project room at IRV in full action.
	Cristo Grigorov and Thomas Ott of ASDS get some good advice from Tomas Hedqvist of how to properly interface with the GPS equipment borrowed from Esrange. Standard commercial GPS recievers won't work at thoose high altitudes reached by BEXUS5.
	Jimmy Lovén seem to enjoy himself etching a PCB for ASDS...
	..while his teammate Christo Grigorov got aware that nothing works as it should and the deadline is closing in.
	The FTC experiment running smoothly on the first simulated flight at IRV.
	BEXUS5 project room during simulated flight. Laurent Aupin in front of his groundstation software monitoring the data transmitted from ASDS.
	Payload Environment Monitoring experiment, PEM, ready for flight.
	ASDS and FTC got together and stacked their experiments on top of eachother in similar boxes and made an own isolating casing aswell. The experiments need to be placed as close to the center of rotation of the E-GON platform as possible, leaving them outside the BEXUS5 box.
	Time to mount the ASDS/FTC onto E-GON.
	PEM fastened on top of E-GON in a way to be able to measure temperature and sun intensity of all four sides simultaneously.
	Jörgen Hedin in front of an almost complete payload mounted on the E-GON platform in the SkyLark preparation building at Esrange.
	This is the scientific centre at Esrange where all experimenteers will reside during flight. Everything is prepared and set up for the MPEG groundstation along with the three groups recieving real time data.
	The 40t massive Hercules launch vehicle with the payload in front ready for interference testing at the Esrange balloon pad.
	Interference testing in progress. E-LINK radio downlink system turned on and all systems like MPEG, flight transponders and GPS position transmitters started up to assure that the equipment don't interfere with eachother.
	The MPEG groundstation and the ASDS and FTC experiments recieve and transmits data correctly during interference testing. Everyone is looking forward to launch.