Future

1. Sensitivity improvement by adding more antennas



Below is a list of existing or planned radio telescopes, which at least in principle could become available for future 3mm-VLBI. The addition of large and sensitive millimeter-telescopes (preferably located at high altitudes) will help to further improve the sensitivity and imaging capabilities of the global mm-arrays.

Possible Participants in future 3mm-VLBI:



NameLocation Height DiameterApert.Eff.SurfaceGain existing VLBI equipment
[m] [m] [micron][K/Jy]
Existing:
NobeyamaJapan 1300 45 0.3 200 0.17 yes
Noto Italy sea level 32 0.29 180 0.085 yes
KittPeakArizona 1900 12 0.62 60 0.025
ALMA Chile 5000 50x12 0.7 15 1.4 yes
LMT Mexico 4600 50 0.6 70 0.4 yes
SRT Sardinia 600 64 0.46 150 0.54 yes


(The given telescope parameters were collected from the literature and the web, and may be subject to changes. Please send e-mail to T. Krichbaum for comments, which help to improve this table.)

2. Sensitivity improvement by recording at higher bit rates


       
  • VLBA Memo No. 46: VLBA at 4 Gbps
  •        
  • Mark5+Mark6 VLBI Data System
  •        
  • 512 Mbps Test
  •        
  • First transatlantic fringe detection with VLBI at 1.3mm (230GHz)
  •        
  • 4 Gbps recording
  •        
  • VLBA upgrade
  •        

    3. Sensitivity improvement via phase correction


           
  • Water-Vapour Radiometer Effelsberg (private homepage of A. Roy)




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