Obsinp Script changes for New Control system
The telescope observing interface has been updated to observe with new wide band high frequency receivers. This version of the control interface is referred as the New Control System by the Effelsberg team. Below are some details on the changes required in the current observing scripts.
Note that the receivers can also be set up manually as usual. The pull-down menu that displays various receiver versions appears with newer labels. See screenshots towards the end of this page.
Snippet from old control system
Refer to the obsinp script snippet below. The only change is in the line that refers to the receiver, e.g FE:S60mm : VERn 2. Here VERn refers to receiver version, and this replaced by a descriptive string in the new control system. In the obsinp graphical interface, the new descriptive string is visible in the pull-down list for each receiver.
MF:S99185
MF:A08@190
MF:A16@190
FE:S60mm ; VERn 2 ; Frequency 4.850 ; SideBand Upper ; Init 1
1745-2900-ON_R ; CoordinateSystem Equatorial ; Equinox J2000 ; SCANTime 60 ; ObjectLongitude 17 45 40.19 s ; ObjectLatitude -29 00 30.37 " ; LatOff 0.0 ; LonOff 0.0 ; PMODE CalFE
1745-2900_S ; CoordinateSystem Equatorial ; Equinox J2000 ; SCANTime 60 ; ObjectLongitude 17 45 40.19 s ; ObjectLatitude -29 00 30.37 " ; LatOff 0.0 ; LonOff 0.0 ; PMODE Search
#### S36
FE:S36mm ; VERn 5 ; Frequency 8.350 ; SideBand Upper ; Init 1
1745-2900-ON_R ; CoordinateSystem Equatorial ; Equinox J2000 ; SCANTime 60 ; ObjectLongitude 17 45 40.19 s ; ObjectLatitude -29 00 30.37 " ; LatOff 0.0 ; LonOff 0.0 ; PMODE CalFE
1745-2900_S ; CoordinateSystem Equatorial ; Equinox J2000 ; SCANTime 60 ; ObjectLongitude 17 45 40.19 s ; ObjectLatitude -29 00 30.37 " ; LatOff 0.0 ; LonOff 0.0 ; PMODE Search
Refer to the table below on the precise changes for various receivers.
For Timing/Search observations with PSRIX1 (a.k.a ROACH1)
PSRIX1 can process a maximum of 500MHz and is used with P217/P200/S110 receivers. In the list below, only S60/S45/S36 can generate bandwidths >= 500MHz.
| Receiver | OLD | NEW | Remarks |
|---|---|---|---|
| P217 (7-BEAM) | FE:P217mm ; VERn 6 ; Frequency 1.36 ; SideBand Upper ; Horn 0 | FE: P217mm ; pulsar_ROACH1 ; Frequency 1.36 | PSRIX/PFFTS |
| FE:P217mm ; VERn 6 ; SideBand Upper ; Horn 0 | FE: P217mm ; pulsar_ROACH1 ; Frequency 1.362 ; SideBand Upper ; Horn 0 | PSRIX LEAP observations | |
| P200 | FE:P200mm ; VERn 3 ; Frequency 1.36 ; SideBand Upper ; Horn 0 | FE:P210mm ; pulsar ; Frequency 1.360 ; SideBand Upper ; Horn 0 | PSRIX 21cm obs |
| P180 | FE:P200mm ; VERn 4 ; Frequency 1.64 ; SideBand Upper ; Horn 0 | FE:P180mm ; pulsar ; Frequency 1.660 ; SideBand Upper ; Horn 0 | PSRIX 18cm obs |
| S110 | FE:S110mm ; VERn 1 ; Frequency 2.6395 ; SideBand Upper | FE:S110mm ; pulsar_Sband ; Frequency 2.550 ; SideBand Upper ; Horn 0 | PSRIX 11cm |
| S60 | FE:S60mm ; VERn 2 ; Frequency 4.85 ; SideBand Upper ; Horn 0 | FE:S60mm ; pulsar_Cband ; Frequency 4.850 ; SideBand Upper ; Horn 0 | PSRIX 6cm + PFFTS |
| S45 | FE:S45mm ; VERn 1 ; Init 1 | FE:S45mm ; pulsar_wideCband ; Frequency 6.0 | PSRIX - 4.5-5.0GHz (use line pointing) |
| S45 | was not in use | FE:S45mm ; pulsar_wideXband ; Frequency 7.3 | PSRIX - 5.8-6.3GHz (use line pointing) |
| S36 | FE:S36mm ; VERn 5 ; Frequency 8.350 ; SideBand Upper | FE:S36mm ; pulsar_Xband ; Frequency 8.350 ; SideBand Upper | PSRIX 3.6mm |
| S36 | was not in use | FE:S36mm ; pulsar_Xband1G ; Frequency 8.550 ; SideBand Upper | do not use - PSRIX cannot handle |
For the PSRIX2 Instrument
PSRIX2 will process a maximum of 8GHz (4GHz at the moment, and 4 more by Jan 2021). For S14/S7, two beams of 4GHz each are processed.
| Receiver | OLD | NEW | Remarks |
|---|---|---|---|
| S45 | was not in use | FE:S45mm ; pulsar_wide_Cband ; Frequency 6.0 | CX - 4-8GHz (request line pointing) |
| S45 | was not in use | FE:S45mm ; pulsar_wide_Xband ; Frequency 7.3 | CX - 5.3-9.3GHz (request line pointing) |
| S20 | was not in use | FE:S20mm ; pulsar_dualbeam ; Frequency 15.5 | Ku-Band (beam 0) 13-18GHz w/ 1GHz gap in the middle |
| Ku-Band (beam 1) 13-18GHz w/ 1GHz gap in the middle | |||
| S14 | was not in use | FE:S14mm ; pulsar_dualbeam ; Frequency 22.0 | 18-26 GHz (8GHz) to 4xROACH2 |
| S14 | was not in use | FE:S14mm ; pulsar_19.25GHz_BW2GHz ; Frequency 19.25 | 18-20GHz (2GHz) to a ROACH2 |
| S7 | was not in use | FE:S7mm ; pulsar_dualbeam ; Frequency 35.5 ; | 33-38 GHz (beam 0). 1GHz gap in the middle |
| 33-38 GHz (beam 1). 1GHz gap int he middle |
Representative screenshots
