LBT Q1 2007 Engineering LBT Q1 2007 Engineering ReviewReview

DAQDAQ

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Housekeeping System Housekeeping System RequirementsRequirements

Interface directly to the Agilent 34970AInterface directly to the Agilent 34970A Absolute accuracy better than 0.5° CAbsolute accuracy better than 0.5° C Resolution better than 0.05°CResolution better than 0.05°C Measurement range at least -25°C to Measurement range at least -25°C to

+35°C+35°C Locations (symmetrical left and right)Locations (symmetrical left and right)

C-ring extension, M3 swing arm height, front and rearC-ring extension, M3 swing arm height, front and rear C-ring extension, M2 swing arm height, front and rearC-ring extension, M2 swing arm height, front and rear Telescope rear counterweights on the C-ring outsideTelescope rear counterweights on the C-ring outside

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Housekeeping System Basic Housekeeping System Basic DesignDesign

RTD (Resistance Temperature RTD (Resistance Temperature Detector)Detector)

4-wire installation4-wire installation

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Highlights (Q1/2007)Highlights (Q1/2007)

Basic design finishedBasic design finished Procured sensors for testingProcured sensors for testing Installed two test sensorsInstalled two test sensors

Surface temperatureSurface temperature Air temperatureAir temperature

Data collection and analysis begunData collection and analysis begun

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Open IssuesOpen Issues

TechnicalTechnical Signal noiseSignal noise

ShieldingShielding Sensor placementSensor placement

FragileFragile Avoid blocking access for maintenanceAvoid blocking access for maintenance

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Open IssuesOpen Issues

ScheduleSchedule Installation requires telescope accessInstallation requires telescope access

FinancialFinancial NoneNone

ResourceResource Personnel for fabrication and installationPersonnel for fabrication and installation

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Progress (Q1/2007)Progress (Q1/2007)

Completed basic designCompleted basic design TestingTesting

Installed surface temperature sensorInstalled surface temperature sensor Collected two weeks of dataCollected two weeks of data

Installed air temperature sensorInstalled air temperature sensor Currently collecting dataCurrently collecting data

19-Apr-200719-Apr-2007 LBT Q1 2007 Engineering RevieLBT Q1 2007 Engineering Revieww

Planning (Q2/2007)Planning (Q2/2007)

Data AnalysisData Analysis Procurement of additional sensorsProcurement of additional sensors Installation of additional sensorsInstallation of additional sensors