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Table 1
Frequency ranges, half power beam widths θb, main beam efficiencies ηMB, and observable CO rotational excitation lines for APEX and JCMT instruments.
| Instrument | Frequency | θ b | η MB | Observable |
| (GHz) | (arcsec) | CO lines | ||
|
|
||||
| APEX | ||||
| APEX-2A | 279−381 | 17.3 | 0.73 | 12CO, 13CO (3−2) |
| FLASH-I | 430−492 | 13.3 | 0.60 | 12CO, 13CO (4−3) |
| FLASH-II | 780−887 | 7.7 | 0.43 | 12CO (7−6) |
|
|
||||
| JCMT | ||||
| A | 211−279 | 20 | 0.69 | 12CO, 13CO (2−1) |
| B | 315−375 | 14 | 0.63 | 12CO, 13CO (3−2) |
| HARP | 325−375 | 14 | 0.63 | 12CO, 13CO (3−2) |
| RxW(C) | 430−510 | 11 | 0.52 | 12CO, 13CO (4−3) |
| RxW(D) | 626−710 | 8 | 0.30 | 12CO, 13CO (6−5) |
| E | 790−840 | 7 | 0.25 | 12CO (7−6) |
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