MWA Project:. Site: Murchison Radio Observatory Australia’s proposed SKA Site Strategy: 512 Antenna “Tiles” Explore “Large N / Small D” regime Correlate.

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Presentation transcript:

MWA Project:

Site: Murchison Radio Observatory Australia’s proposed SKA Site Strategy: 512 Antenna “Tiles” Explore “Large N / Small D” regime Correlate all pairs Instantaneous complete UV coverage confront issues with Wide-Field Imaging, Foregrounds, Dynamic Range, …

MWA Project: Science goals: Epoch of Re-ionization Transients, Sun, … Implications… Compact, Dense Array Diameter ~ 1.5 km Frequency coverage MHz

MWA Project: Consortium: MIT Haystack Observatory MIT Kavli Institute Harvard-Smithsonian Center for Astrophyics Australian universities (Curtin, ANU, Melbourne, Swinburne, Sydney, Tasmania, Western Australia, …) Raman Research Institute CSIRO/ATNF

Hierarhical groupings

Digital Beamformer ambient temperature (early design)

Receiver Node Housing 64 Nodes Coax RF input from 8 Tiles Fiber digital output Derek Caroll - PSI

Fielded Enclosure

Correlator: FPGA based “hardware correlator” and fine Filter Bank (10KHz channels) Correlate all pairs => 130,816 Interferometer Baselines (Prototyping & Testing … baseband recorders, software filter banks and correlators, …)

Aerial Photo of 32 Tile Prototype Array: Nov 2007

Locations of Antenna Tiles in 32T Array West-East [m]

Hydra A

115 Mhz Jan 2010

Hydra A 121 Mhz Chris Williams Sep 2010

Pictor A Fornax A

Pictor A Fornax A

Pictor A Parkes Catalog

Pictor A Parkes Catalog MWA Sources

32T Image 114 MHz UV coverage Full Hour Angle Coverage

Centaurus A

MWA 32T 115 MHz

Centaurus A

Comparison with X-ray observations

Solar Radio Bursts MHz Oberoi, Matthews, et al

Grid of Radio Spectra across the face of the Sun Oberoi, Matthews, et al

Instantaneous 32T uv-coverage

Ord, Mitchell & Greenhill “2PiP” baseband recording system Vela

Ord, Mitchell & Greenhill “2PiP” baseband recording system

MWA Future Milestones: 32 Tile Array …… Feb Tile Array …. --> 2011

MWA Lessons development of/on new site is hard distributed, international project needs “project management” (… takes longer and costs more than expected) complete instantaneous uv-coverage is very powerful