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 yes
LMT Mexico 4600 50 0.6 70 0.4 yes
SRT Sardinia 600 64 0.46 150 0.54 yes
JCMT Hawaii 4090 15 0.55 24 0.035 yes
TRAO S. Korea 109 13.7 0.55 130 0.024


(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


       
  • Mark5+Mark6 VLBI Data System
    •        
  • 512 Mbps Test
    •        
  • 4 Gbps recording
    •        
  • VLBA Sensitivity upgrade
    •        
  • EVN 4 Gbps recording status
    •        

    3. Sensitivity improvement via phase correction


           
  • Water-Vapour Radiometer for Effelsberg (Roy et al. 2006)
    •        
  • Frequency phase transfer at the KVN (eg. Rioja et al. 2015)



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