lbaops:lbaaug2013:v255t
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
lbaops:lbaaug2013:v255t [2013/08/14 04:28] breid |
lbaops:lbaaug2013:v255t [2013/08/14 05:31] breid |
||
|---|---|---|---|
| Line 70: | Line 70: | ||
| - | The purpose of these observations is to obtain the second | + | The purpose of these observations is to obtain the subsequent |
| - | The G263.250 observations | + | The G263.250 observations should show a modest peak at a sky frequency of 6667.8 MHz. The G305.21 |
| During the ICRF runs we have sometimes had to exclude certain antennas (particularly Parkes and Hart) from observations of some sources in order to get a good spread of azimuths and elevations. | During the ICRF runs we have sometimes had to exclude certain antennas (particularly Parkes and Hart) from observations of some sources in order to get a good spread of azimuths and elevations. | ||
| Observing comments for each antenna: | Observing comments for each antenna: | ||
| + | |||
| Hobart, Ceduna : | Hobart, Ceduna : | ||
| The 4 x 16 MHz bandpass setup requires feeding two separate LOs into IFP#1 and #2 on the DAS/ | The 4 x 16 MHz bandpass setup requires feeding two separate LOs into IFP#1 and #2 on the DAS/ | ||
| - | The level into IF#1 will change significantly between the two setups. Set the level into the DAS so that it is within range for both setups. Setup the system temperature measurement so that it works for both IFs for the v255s.5cm setup - it doesn' | + | The level into IF#1 will change significantly between the two setups. Set the level into the DAS so that it is within range for both setups. Setup the system temperature measurement so that it works for both IFs for the v255s.5cm setup. Please don't change the attenuation into the DAS when the setup changes as that may change the delay. |
| - | Parkes, ATCA, Mopra : | + | |
| ==== Mopra : ==== | ==== Mopra : ==== | ||
| Line 87: | Line 87: | ||
| Note the use of the dual sideband vsop profile. Only the lower sideband should be selected for transfer. | Note the use of the dual sideband vsop profile. Only the lower sideband should be selected for transfer. | ||
| - | Note the use of the dual sideband vsop profile. Only the lower sideband should be selected for transfer. The basic method and frequencies for this experiment are the same as for the earlier v255 experiments (Mar 13, Mar 12, Nov 11 and earlier). The frequency setup for this session is identical to v255r in March 2013. As for the earlier experiments for the ICRF observations it is 2 IFs with different polarizations. The times for the setup (mode) changes are given above. | + | Note the use of the dual sideband vsop profile. Only the lower sideband should be selected for transfer. The basic method and frequencies for this experiment are the same as for the earlier v255 experiments (Jun 13, Mar 13, Mar 12, Nov 11 and earlier). The frequency setup for this session is identical to v255s in June 2013. As for the earlier experiments for the ICRF observations it is 2 IFs with different polarizations. The times for the setup (mode) changes are given above. |
| - | Target source not up at Mopra from 20:19 UT onwards. | + | Not observing |
| ==== ATCA : ==== | ==== ATCA : ==== | ||
| For the ATCA please phase-up antennas CA01 through CA05 for this experiment. | For the ATCA please phase-up antennas CA01 through CA05 for this experiment. | ||
| - | |||
| - | NOTE: The ATCA antennas should be re-phased on PKS1934-638 at: 11:31, 12:39, 14:18, 17:16 and 19:08 UT. The array should also be re-phased on J1254-6111 or J1256-6449. Approximate times when either of these are observed during the experiment: 03:48, 05:48, 07:00, 09:53, 10:45, 15:13 and 16:29 UT. | ||
| Setup as for a 2p-4IF experiment (dual DAS with huygens cable for entire experiment) with DAS1 tuned to the lower frequency and DAS2 to the upper frequency. Use the feature in cdisko version 4 to automate the changes of channel selection as per the following table. | Setup as for a 2p-4IF experiment (dual DAS with huygens cable for entire experiment) with DAS1 tuned to the lower frequency and DAS2 to the upper frequency. Use the feature in cdisko version 4 to automate the changes of channel selection as per the following table. | ||
| - | v255s.5cm Channels 5-8 | + | v255t.5cm Channels 5-8 |
| - | v255s.5cm-icrf Channels 1,2,7,8 | + | v255t.5cm-icrf Channels 1,2,7,8 |
| - | Target sources not up at ATCA from 20:07 UT onwards. | + | Not observing |
| ==== Parkes : ==== | ==== Parkes : ==== | ||
| - | Target sources not up at Parkes from 09:00-09:26, 16:18-17:16 and from 19:51 UT onwards. | + | Not observing during these times: |
| + | 226 / 18:52 - 20:34\\ | ||
| + | 226 / 21:38 - 22:31\\ | ||
| + | 226 / 23:32 - 227 / 00:13\\ | ||
| + | 227 / 02:54 - 03:23\\ | ||
| + | 227 / 06:28 - 06:51\\ | ||
| + | 227 / 11:54 - 12:33\\ | ||
| + | 227 / 14:36 - 17:05 | ||
| ==== Hart: ==== | ==== Hart: ==== | ||
| - | Observations at Hart begin at 05:58-06:10 UT for delay calibrators, and then observations commence | + | Observations at Hart begin at 227/01:15-01:30 UT for ICRF observations, and then delay calibration |
| - | Target | + | Target |
| - | + | ||
| - | Note: Hart's participation in the ICRF observations is only during the 12:45 UT bloc. | + | |
| + | Not observing during these times: | ||
| + | 226 / 18:00 - 227 / 01:15\\ | ||
| + | 227 / 05:00 - 06:15 (includes ICRF bloc) \\ | ||
| + | 227 / 06:51 - 07:56\\ | ||
| + | 227 / 09:42 - 10:05 (includes ICRF bloc) \\ | ||
| + | 227 / 11:26 - 11:44\\ | ||
| + | 227 / 13:30 - 14:21 (includes ICRF bloc) \\ | ||
| + | 227 / 17:15 - 18:00 (includes ICRF bloc) | ||
| Line 141: | Line 152: | ||
| [[http:// | [[http:// | ||
| [[http:// | [[http:// | ||
| + | |||
lbaops/lbaaug2013/v255t.txt · Last modified: 2015/12/18 16:38 (external edit)
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
