| Block | AST | LST | Entry |
|---|---|---|---|
| 08.19.PM | 14:45-16:15 | 12:12-13:42 | Lots of things go wrong. Array rotation not possible, headers incomplete, but first photons fall on a1946. |
| 08.20.PP | 02:45-05:15 | 00:14-02:44 | Problems with CIMA and internal AO network. Cannot rotate feed, and off-meridian observing not possible. Finally get started and take some short drifts. |
| 08.21.PP | 02:45-05:15 | 00:18-02:48 | We can rotate ALFA, fire cal., etc. There are still parameters missing
from the header and the on-line display does not work. We run a 10 min drift
at Az=200, Rot=20 and then a long one, crossing the same spot
at DecJ=+27d23', Az=180, Rot=19d. A quick look at bandpass subtraction for
the 10min scan shows pretty flat baselines! Data should be ok except: file:0002.fits terminated and new one started within scan; apparently some max size exceeded. |
| 08.21.PM | 15:00-17:00 | 12:35-14:35 | More progress. Running Xscans to test offset beam positions at various ALFA_ANG. We see galaxies in last night's maps! However, inspection of the data afterwards reveal beam/pol id problems and cross scans are all suspect. |
| 08.22.PP | 02:30-05:00 | 00:06-02:37 | Changes have been made but positions still uncertain so we run drifts across known HI targets from EGG digital archive. We confirm beam/pol id's as now reported. And we see galaxies! |
| 08.22.PM | 15:00-16:30 | 12:39-14:09 | Xscans not working. Doing 600 sec drifts across NVSS sources at Az=180, RotAng=19d, offsetting to put sources in different beams. They aren't in the right place! Que pasa? We work through dinner.... |
| 08.22.GC | 21:15-23:15 | 18:55-20:55 | More chart recorder mode: drift across NVSS sources, Az=180., RotAng=19, with offsets. Drift scans have their advantages.... |
| 08.23.PP | 02:30-05:00 | 00:11-02:41 | Series of 600sec drifts at DecJ=+27 23, RotAngl=19. The beam layout is now clear; Xscans don't work. |
| 08.23.AM | 05:00-08:00 | -05:41 | Continuation of same, across AC and on through sunrise (we're tired...) |
| 08.23.GC | 21:15-23:15 | 18:59-20:59 | Try cal firing on top of data stream. 900 sec drifts, cal fired every 175 sec.
Drift at +27d07m54 We have lost one pol of Beam0. |
| 08.24.PP | 02:30-05:00 | 00:15-02:45 | Drift at +27d07m54 |
| 08.24.AM | 05:00-08:00 | -05:45 | Continuation through sunrise. |
| 08.25.PP | 02:30-05:00 | 00:18-02:48 | Drift at +27d22m30 |
| 08.25.AM | 05:00-08:00 | -05:49 | Continuation on through sunrise |
| 08.25.PM | 15:00-16:15 | 12:50-14:05 | Time spent on CIMA tests. Phil and Ganesh have verified the beam layout in the dome. |
| 08.26.PP | 02:15-04:45 | 00:07-02:38 | Drift at +27d37m06 |
| 08.26.PM | 15:00-16:15 | 12:54-14:10 | Used this time to test cal firing duration. No science data. |
| 08.27.PM | 15:00-16:15 | 12:58-14:13 | Used most of this time to explore further the ramp time and duration of the cal. Did one drift at +27d37m06 with cal duration 2 secs. |
| 08.28.PP | 02:15-04:45 | 00:15-02:45 | Drift at +27d51m42: using a cal duration of 2 secs, every 175 secs. |
| 08.28.PM | 15:00-16:15 | 13:02-14:17 | Reset ALFA power on the platform + some power level problems... a bit of science data at the end. |
| 08.29.PP | 02:15-06:30 | 00:19-02:49 | Adopted a calibration scheme of 2 sec cals every 275 secs... this way from now on unless otherwise stated. Drifts at +26d53m18. Almost 4 hours of science data! Start completing 2 square degrees of tile 26 with this setup. |
| 09.01.PM | 15:00-16:15 | 13:18-14:33 | Some problems during telescope maintenance and misconfigured WAPPs... no science data. |
| 09.02.PP | 02:15-04:30 | 00:35-02:50 | Drifts at +27d07m54. A new fits file is now written with each scan... things go very smoothly! Over 2 hours of science data. |
| 09.02.PM | 15:00-16:15 | 13:22-14:37 | Drifts at +26d09m30. Afternoon science data. |
| 09.03.PP | 01:45-04:15 | 00:08-02:39 | Drifts at +27d22m30. 2.5 hours science data. |
| 09.03.PM | 15:00-16:30 | 13:26-14:41 | Drifts at +26d09m30, but power levels fluctuating wildly - no data. |
| 09.04.PP | 01:45-04:15 | 00:13-02:43 | Drifts at +27d37m06. 2.5 hours science data. |
| 09.04.PM | 15:00-16:30 | 13:30-14:45 | Drifts at +26d09m30. Afternoon science data. |
| 09.05.PP | 01:45-04:15 | 00:17-02:47 | Drifts at +27d00m36. 2.5 hours science data. |
| 09.05.PM | 15:00-16:30 | 13:34-14:49 | Drifts at +26d09m30. Afternoon science data. |
| 09.06.PP | 01:45-04:00 | 00:21-02:36 | Drifts at +27d15m12. 2 hours science data. |
| 09.06.PM | 15:00-16:00 | 13:38-14:38 | Drifts at +26d09m30. Afternoon science data. |
| 09.08.PP | 01:30-04:00 | 00:13-02:44 | Drifts at +27d29m48. 2.25 hours science data. |
| 09.09.PP | 01:30-04:00 | 00:17-02:48 | Problems with ALFA motor and WAPPs due to power outage. No data. |
| 09.09.PM | 15:00-16:15 | 13:50-15:05 | Drifts at +26d09m30. Afternoon science data. |
| 09.10.PP | 01:15-03:45 | 00:07-02:37 | Drifts at +27d44m24. 2.25 hours science data. |
| 09.21.PP | 00:45-03:15 | 00:23-02:53 | Drifts at +27d59m00. 2.25 hours science data. Beam 0 pol A ok! |
| 09.22.PP | 00:30-03:00 | 00:12-02:39 | Drifts at +26d38m42. 2.5 hours science data. Beam 0 pol A ok! |
| 09.23.PP | 00:30-03:00 | 00:16-02:43 | Drifts at +26d46m00. 2.5 hours science data. |
| 09.24.PP | 00:30-03:00 | 00:30-02:45 | Drifts at +26d2406; radar leaking into whole band; no science data. |
| 09.25.PP | 00:30-03:00 | 00:36-02:51 | Drifts at +26d2406; few radar problems, some science data. |
| 09.26.PP | 00:15-07:00 | 00:23-06:56 | Drifts at +26d0930; radar leaking into whole band; no science data. |
| 09.27.PP | 00:15-07:00 | 00:20-06:50 | Drifts at +26d2406; almost 7 hours science data. |
| 09.28.PP | 00:15-03:00 | 00:31-02:50 | Drifts at +26d1648. 2.5 hours science data. |