In the JCMT Science Archive one can find data obtained with the following receivers in combination with the retired DAS (Digital Autocorrelating Spectrometer, see JCMT Newletter 1 (July 1993), page 28) backend.
The raw data from these observations obtained after approximately September 1993 (GSD format, version 5.3), have been converted to the ACSIS format used by our current backend, and are available through the Science Archive. The data are labelled there with -DAS. E.g., converted observations from RxB3I are found under instrument RxB3I-DAS. These converted raw data should be reduced using the ACSIS pipeline.
| Rx | Time | Freq GHz |
IF GHz |
ηmb | ηfss | HPBW arcsec |
|---|---|---|---|---|---|---|
| RxA | 1989 to 1991 | |||||
| RxA2 | 1993-09-08 to 1998-11-28 | 205 – 285 | 1.5 | 0.69 | 0.80 | 19.7 |
| RxA3 | 1998-12-05 to 2006-02-11 | 211.5 – 276.5 | 4.0 | 0.69 | 0.80 | 19.7 |
| RxB2 | 1993-11-17 to 1993-11-23 | 330 – 360 | 3.94 | 0.58 | 0.70 | 14.3 |
| RxB3I | 1993-09-09 to 1996-12-01 | 300 – 380 | 1.5 | 0.58 | 0.70 | 14.3 |
| RxB3 | 1997-05-29 to 2006-02-13 | 310 – 370 | 4.0 | 0.63 | 0.76 | 13.2 |
| RxC | 1989 – 1993 | |||||
| RxC2 | 1993-09-10 to 1998-07-04 | 450 – 505 | 3.94 | 0.52 | 0.70 | 10.8 |
| RxWC | 1998-07-10 to 2005-08-25 | 430 – 510 | 4.0 | 0.52 | 0.70 | 10.8 |
| RxWD | 1998-07-10 to 2005-08-25 | 630 – 710 | 4.0 | 0.30 | 0.60 | 8.0 |
| MPIRXE | 2000-04-13 to 2003-02-01 | 790 – 840 | 2.54 | 0.25 | 0.50 | 7.0 |
RxB3, RxWC, and RxWD had two channels each, receiving orthogonal linear polarization from nominally the same position on the sky.