n21dk01 Correlation Report
General information
- Project: "Wideband spectral line VLBI study (Dongjin Kim) 22/43GHz 8Gbps"
- Epochs: G, H, I, J, E, K, L
- Station feedback:
Status
| what | date |
| Effelsberg transfer Epochs G and H complete, remainder postponed due EVN Session 2 VLBI (27 May-17 Jun) | 20.05.2021 |
| Yebes transfer Epochs G, H, I, J, E complete | 11.06.2021 |
| Effelsberg transfer Epochs I, J, E, K, L completed | 23.06.2021 |
| Fringes Ef-Ys K-band and Ef-Ys Q-band, epoch G | 10.06.2021 |
| KVN Yonsei started transfer of epoch G | 16.06.2021 |
| KVN Ulsan started transfer of epoch G... 14.07.2021 still transferring... | |
Data transfer status
| Epoch | Ef 2021 | Ys | Kt | Ku | Ky |
| G | 20.5. ok | 8.6. ok | 22.7. ok | 10.7. ok | 1.7. |
| H | 19.5. ok | 29.5. ok | 25.7. ok | -not started- | 23.7. |
| I | 20.6. ok | 5.6. ok | 5.8. ok | 4.8. ok | 3.8. |
| J | 21.6. ok | 8.6. ok | -not started- | -not started- | ongoing (13.8.) |
| E | 20.6. ok | 11.6. ok | 1.8. ok | 29.7. ok | 28.7. |
| K | 23.6. ok | (not observed) | -not started- | -not started- | -not started- |
| L | 23.6. ok | (not observed) | -not started- | -not started- | -not started- |
A Priori
Yebes
- J. Gonzales: rate 1.17e-13 s/s, offsets in logs named n1k01?ys.log on vlbeer.
- Did not observe K and L due to heavy rain and broken shutter.
- Transferred the data of G, H, I, J, E.
- VEX freq block sidebands UUUU UUUU LLLL LLLL rather than the default UL UL ... from SCHED
- Epoch E: scan No0003 (142-0814) file empty or not recorded
Effelsberg
- U. Bach, etransferred epochs G & H. Pending transfer of the remaining epochs.
- Offset +19.3 usec in G
- Logs named ndk01g, ndk01h, and later n1k01i, n1k01j, n1k01k, n1k01l, n1k01e on vlbeer.
- H-maser rate same as in GMVA f211a, i.e., 2.05e-13 s/s.
- VEX freq block sidebands UUUU LLLL rather than the default UL UL ... from SCHED.
- Epoch G: wind and bad weather, first part ot track unusable, not on source until ~18:30 UT
KVN Yonsei, Ulsan, Tamna
- Waiting for e-transfer...
- Table of clock offsets, sign for VEX same as in table
- H-maser rate?
- Tie of KVN to Ef+Ys : shift KVN VEX clocks by -2.83 us from kvn a priori values
DiFX
Special setup for correlation, because Effelsberg does not have simultaneous K and Q capability.
- One v2d file for K-band, with "freqIds=..." to select only K-band recorded frequency IDs
- Another v2d file for Q-band, with "freqIds=..." to select only Q-band recorded frequency IDs, and "deltaClock=.." to include any clock offsets over K-band reference clocks
- Zoom bands of 64 MHz due to KVN 2ch x 512 MHz, versus Ef and Ys with 64 MHz wide channels in USB/LSB
- Same zoom bands also added to Ef and Ys in order to produce all-USB visibility data; otherwise HOPS fourfit issues
Fringes
| Station | Code | Fringes | Plots | Comments |
| Ef K | | track G No0053 Ef-Ys | | |
| Ef Q | | (todo) | | |
| Ys K | | track G No0053 Ef-Ys | | |
| Ys Q | | track G No0053 Ky-Ys | | SNR~21 in 196s |
| Kt K | | (todo) | | |
| Kt Q | | (todo) | | |
| Ku K | | track G No0044 Ku-Ky | | SNR~25 in 156s |
| Ku Q | | track G No0044 Ku-Ky | | |
| Ky K | | track G No0053 Ef-Ys | | |
| Ky Q | | track G No0053 Ky-Ys | | |
Notes
Post-Correlation checks
Residuals
FITS completeness (pclist)
