Tianlai Analysis Teleconference

US/Central
Peter Timbie, Peter Timbie (UW-Madison)

Minutes

  • Planning for WIYN/Hydra observations - Albert & Greg
    • Albert has shared travel plan
  • WIYN Survey analysis - Reza. See attached file below.
    • Slide 5 is not corrected for extinction
    • John suggests 2 additional tests for quality of the WIYN/Hydra redshift determinations: 1) see if correlated structures depend on Quality factor.  Most likely effect is contamination of spectra by lines from sky emission.  2) see whether correlations appear both in z and in angle
  • Update on Tianlai Dish Array observing status/plans - Jixia
    • ROACH GPU server, which had been used for storing dish data (starting in 2013), has been moved to ROACH correlator. 
    • some power outages have prevented observing for ~ 3 weeks
    • Dish server is back, observations of constant Dec strips (with daily views of calibration sources) will resume
    • Holographic beam calibrations of E-W beams is underway with dish/cylinders
    • ROACH GPU for cylinders has had hardware problems, but OK now?   Some software errors in C code.
    • Reza suggests terminating inputs to check
  • Update on collaboration meeting - Yichao.  
    • Need to set up website for meeting.  Maybe one at Northeastern to advertise meeting and a second one for registration?  
    • Attendees need to send email to Yichao to get invitation letter for visas
  • Cylinder Beamforming and Mapmaking - Zijie Yu - see attached presentation
    • Beautiful sky maps!   Cas A, M87, Cyg A and Galactic plane are clearly visible.  So is Sun and sidelobes.
    • Sun substraction works OK

 

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