Table of contents
General session information:
Report, regarding the poor performace of the VLBA in this session:
Description of special processing applied to P3 (Pico Veleta DBBC3) data in this session:
Special processing of P3 (Pico Veleta DBBC3) data in C192 session
Storage requirements
| Stations | Obs time [hrs] | total volume [TB] @4Gbps | Recording |
|---|---|---|---|
| VLBA | 39 | 36 | Mark6 |
| Ys, On, Mk, Eb | 38 +2 | 36 | local & etransfer |
| Pv | 38 +2 | 36 | Mark6 |
| KVN | 36 | 32.5 | local & etransfer |
| GLT | 45 | 40.5 | Mark6 |
assuming a duty cycle of 50%.
Correlation Status
| Project Code | Block Code | Sources | DOYS | UT | Freq | Stations | Status | PI | Comment |
|---|---|---|---|---|---|---|---|---|---|
| F192A | 276 | 86360 MHz | Ef, On, O6, Ys, Mh, Pv ,P3 | done | n/a | fringe check | |||
| MC004 | C192A | 1803+784 | 276-277 | 18:30-04:30 | 86360 MHz | Ef, On, Ys, Mh, Pv, P3, VLBA, GLT, KVN | correlation finished, data released to PI | CUI | |
| MM017A, MB011B | C192B | FERMI sources | 277-278 | 04:30-07:30 | 86360 MHz | Ef, On, Ys, Mh, Pv, P3, VLBA, GLT, KVN | correlation finished, data released to PI | MARSCHER | C192B and MM017A coinside except for 2013+370 (277:1445-1701) data used for MB011B too. |
| MB011B | C192C | Cygnus A | 278-279 | 13:15-09:30 | 86360 MHz | Ef, On, Ys, Mh, Pv, P3, VLBA, GLT, KVN | correlation finished, data released to PI | BACH |
General comments
- Ys has switched the IF configuration with c192b from using A/C to A/B. The first affected scan is no0053. The change was done due to a faulty calibration of board C which led to lower amplitudes in LCP prior to the change.
- "Normal" Pico Veleta PV (DBBC2) data was recorded with wrong polarization setup for most of the session (during C192A, C192B and the first quarter of C192C parts both polarization channels recorded RCP and LCP was completely lost). That's why the main production correlation was done with DBBC3 data in 16 32 MHz band mode rather than usual 8 64 MHz per pol. Because DBBC3 is still in the comissioning stage, certain hardware problems were detected -- phase instability and small amplitude insonsistencies for different boards. To compensate this, additional per band delay corrections were applied during the correlation, see details here.
Comments