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BIMA Antenna Reconstruction

BIMA Antenna Reconstruction. AntennaFarm.V3. antenna assembly. lift pedestal onto base (CRANE) lift dish onto pedestal (CRANE) reinstall ladder (FORKLIFT) caulk seams, reinstall cabin insulation (MANLIFT) install door, window in base insulate base

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BIMA Antenna Reconstruction

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  1. BIMA Antenna Reconstruction

  2. AntennaFarm.V3

  3. antenna assembly • lift pedestal onto base (CRANE) • lift dish onto pedestal (CRANE) • reinstall ladder (FORKLIFT) • caulk seams, reinstall cabin insulation (MANLIFT) • install door, window in base • insulate base • power and fiber connections through base • install new feet on azimuth cable chain • test az, el drives and limit switches • reinstall TV camera • reinstall sun shades on dish and yoke (MANLIFT)

  4. receiver and electronics • install, align WVR mirrors on front truss • install cal wheel plate, A-frame, tie rods; align axis with subreflector • install IF plate • replumb lines to water chiller, test • install VME, cPCI, pwr supply, etc in rack • install a/d mux board on cabin wall • test cabin temperature control • rewire Elco connectors to subreflector • install new fiber cable, splice patch cords on base end • reinstall all cables in rcvr cabin

  5. dewar and cryogenics • install new adsorber in helium compressor, purge; run compressor on test dewar • install compressor on platform (FORKLIFT) • check and purge helium lines • pump out dewar, lift up to rcvr cabin (FORKLIFT), install on A-frame, cool down • install LO plates • test computer control of telescope and rcvr • TV pointing with frame grabber • holography; reset panels as needed

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