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Handbook of Frequency Allocations and Spectrum Protection for Scientific Uses Second Edition (2015) / Chapter Skim
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Appendix D: International Astronomical Union Spectral Lines of Most Importance Between 300 and 1000 GHz
Pages 241-243

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From page 241...
... Although no formal frequency allocations are established above 275 GHz, the International Telecommunication Union (ITU) Radio Regulation 5.565 urges administrations to take all practicable steps to protect passive services from harmful interference in the frequency range of 275-1000 GHz.
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From page 242...
... Band (GHz) Notes1 Hydronium H3 O+ 307.192 306.88-307.50 Deuterated water HDO 313.750 313.44-314.06 Carbon monoxide C18O 329.330 329.00-329.66 Carbon monoxide 13CO 330.587 329.49-330.92 Carbon monosulphide CS 342.883 341.74-343.23 Carbon Monoxide CO 345.796 345.45-346.14 Hydrogen cyanide HCN 354.484 353.30-354.84 Formylium HCO+  356.734 355.54-357.09 Oxygen O2 368.498 368.13-368.87 Diazenylium N2 H +  372.672 372.30-373.04 2 Water vapor H 2O 380.197 379.82-380.58 2 Hydronium H 3O + 388.459 388.07-388.85 Carbon monosulphide CS 391.847 390.54-392.24 Oxygen O2 424.763 424.34-425.19 Carbon monoxide C18O 439.088 438.65-439.53 Carbon monoxide 13CO 440.765 439.30-441.21 Carbon monoxide CO 461.041 459.50-461.50 Deuterated water HDO 464.925 464.46-465.39 Carbon CI 492.162 490.52-492.65 Deuterated water HDO 509.292 508.78-509.80 Hydrogen cyanide HCN 531.716 529.94-532.25 2 Carbon monosulphide CS 538.689 536.89-539.23 2 Water vapor H218O 547.676 547.13-548.22 2 Carbon monoxide 13CO 550.926 549.09-551.48 2 Water vapor H 2O 556.936 556.38-557.49 2 Ammonia 15NH 572.113 571.54-572.69 2 3 Ammonia NH3 572.498 571.93-573.07 2 Carbon monoxide CO 576.268 574.35-576.84 2 Carbon monosulphide CS 587.616 587.03-588.20 2 Deuterated water HDO 599.927 599.33-600.53 2 Water vapor H 2O 620.700 620.08-621.32 2 Hydrogen chloride HCl 625.040 624.41-625.67 Hydrogen chloride HCl 625.980 625.35-626.61 Carbon monosulphide CS 636.532 634.41-637.17 Carbon monoxide 13CO 661.067 658.86-661.73 Carbon monoxide CO 691.473 689.17-692.16 continued
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From page 243...
... Band (GHz) Notes1 Oxygen O2 715.393 714.68-716.11 2 Carbon monosulphide CS 734.324 733.59-735.06 2 Water vapor H 2O 752.033 751.28-752.79 2 Oxygen O2 773.840 773.07-774.61 2 Hydrogen cyanide HCN 797.433 794.77-798.23 Formylium HCO+ 802.653 799.98-803.46 Carbon monoxide CO 806.652 803.96-807.46 Carbon CI 809.350 806.65-810.16 Carbon monosulphide CS 832.057 829.28-832.89 Oxygen O2 834.146 833.31-834.98 Carbon monosulphide CS 880.899 877.96-881.78 Water vapor H 2O 916.172 915.26-917.09 2 Carbon monoxide CO 921.800 918.72-922.72 2 Carbon monosulphide CS 929.723 926.62-930.65 Water vapor H 2O 970.315 969.34-971.29 2 Carbon monosulphide CS 978.529 977.55-979.51 2 Water vapor H 2O 987.927 986.94-988.92 2 NOTES: 1.
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Key Terms

  • carbon monosulphide
  • frequency bands
  • spectral lines
  • radio astronomy
  • allocating frequency

  • radial velocities
  • preferred frequency
  • band limits
  • otherwise noted
  • radio astronomical

  • international telecommunication
  • following frequency
  • line radiation
  • particular note
  • frequency allocations

  • astronomical measurements
  • telecommunication union
  • earlier lists
  • radiation occurring
  • unless otherwise

  • astronomy service
  • water vapor
  • deuterated water
  • hydrogen cyanide
  • frequencies corresponding

  • hydrogen chloride
  • formal frequency
  • frequency range
  • protect passive
  • harmful interference


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