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wg7:apod:apod_obs_auscope
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wg7:apod:apod_obs_auscope [2016/11/25 07:48] Andreas Hellerschmied [Experiments] |
wg7:apod:apod_obs_auscope [2018/04/18 10:14] (current) Andreas Hellerschmied [Ke, Yg, Hb] |
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| However, in November we will intensively try to collect more data. This includes an optimised tracking (continuous tracking should be possible with our antennas) and the observations themselves. Andreas Hellerschmied from Vienna will visit us and Tim Natusch from Auckland has also agreed to support us by providing the Warkworth antenna. Hoping to report on successful observations soon. | However, in November we will intensively try to collect more data. This includes an optimised tracking (continuous tracking should be possible with our antennas) and the observations themselves. Andreas Hellerschmied from Vienna will visit us and Tim Natusch from Auckland has also agreed to support us by providing the Warkworth antenna. Hoping to report on successful observations soon. | ||
| - | ==== Tracking tests Nov 11-14 ==== | + | ==== Tracking tests Nov 11 ==== |
| - | Friday, Nov 11: tracking tests with Ho26m. Some tests using ISS signal; S-band beacon (2270) clearly detected, stable throughout track. Sattrack worked smoothly after drive PC reboot. Testing AzEl track for APOD of the next day. Found we can only do one side of the track (up to about 30 deg elevation). | + | Friday, Nov 11, Mt. Pleasant observatory: tracking tests with Ho26m. Some tests using ISS signal; S-band beacon (2270) clearly detected, stable throughout track. Sattrack worked smoothly after drive PC reboot. Testing AzEl track for APOD of the next day. Found we can only do one side of the track (up to about 30 deg elevation). |
| - | + | ||
| - | Saturday, Nov 12 (**316b**): Morning: APOD track with Ke and Yg. Blocks of quasars before and after (10 min). 5 min break between quasar and sat. AzEl files are manually loaded via antenna control HMI. Quite stressy but works. Signal (carrier and DOR tones) was clearly visible in spectrum analysers, both in S-band and X-band. DOR tones also visible in autocorrelation (0.25 sec of data). Carrier might be saturating. | + | |
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| ===== Experiments ===== | ===== Experiments ===== | ||
| + | |||
| + | Please find detailed descriptions of each experiment (including results in terms of multiband delays computed with fourfit) on the following pages: | ||
| * [[wg7:apod:316a_HbKe|316a]] (KeYg, 2016-11-11, 22:15:00 - 22:39:1010 UT) | * [[wg7:apod:316a_HbKe|316a]] (KeYg, 2016-11-11, 22:15:00 - 22:39:1010 UT) | ||
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| * [[wg7:apod:318d_HbKe|318d]] (KeYg, 2016-11-13, 22:35:00 - 22:57:55 UT) | * [[wg7:apod:318d_HbKe|318d]] (KeYg, 2016-11-13, 22:35:00 - 22:57:55 UT) | ||
| * [[wg7:apod:319a_HbKe|319a]] (HbHoKeYg, 2016-11-14, 10:00:00 - 10:40:05 UT) | * [[wg7:apod:319a_HbKe|319a]] (HbHoKeYg, 2016-11-14, 10:00:00 - 10:40:05 UT) | ||
| - | * 331b (HbKeYg) | + | * 331b (HbKeYg) - not observed |
| * [[wg7:apod:a332_HbKeYg|a332]] (HbKeYg, 2016-11-27 16:00:00 - 2016-11-28 16:00:00 UT, 24 h session) | * [[wg7:apod:a332_HbKeYg|a332]] (HbKeYg, 2016-11-27 16:00:00 - 2016-11-28 16:00:00 UT, 24 h session) | ||
| - | ==== Files and data ==== | + | ==== Observation files and data ==== |
| - | Files (VEX, tracking data, etc.) related to these sessions are provided on the VieVS server via SFTP: | + | Files (VEX, tracking and satellite orbit data, etc.) related to these sessions are provided on the VieVS server via SFTP: |
| - | * vievs.hg.tuwien.ac.at | + | * sorts@vievs.hg.tuwien.ac.at |
| - | * user: sorts | + | |
| * password: Please contact [[andreas.hellerschmied@geo.tuwien.ac.at|Andreas Hellerschmied]], if you need the password | * password: Please contact [[andreas.hellerschmied@geo.tuwien.ac.at|Andreas Hellerschmied]], if you need the password | ||
| * directory: /home/sorts/apod/2016/ | * directory: /home/sorts/apod/2016/ | ||
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| ===== Satellite tracking with AuScope antennas (and Ho) ===== | ===== Satellite tracking with AuScope antennas (and Ho) ===== | ||
| - | * Unordered List ItemThe tracking files have to be loaded by the antenna control system which takes some time. Therefore, there is a gap of min. 5 minutes between blocks of quasar observations and satellite scans in the schedules | + | * The tracking files have to be loaded by the antenna control system which takes some time. Therefore, there is a gap of min. 5 minutes between blocks of quasar observations and satellite scans in the schedules |
| - | * Basical the S/X APOD signals are visible on an attached spectrum analyzer. This can be used to confirm that the antenna is on source during tracking. | + | * Basically the S/X APOD signals are visible on an attached spectrum analyzer. This can be used to confirm that the antenna is on source during tracking. |
| ==== Ke, Yg, Hb ==== | ==== Ke, Yg, Hb ==== | ||
| * Antenna control with direct AzEl input. | * Antenna control with direct AzEl input. | ||
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| **Comments**: | **Comments**: | ||
| * Investigating the signal spectra during tracking a periodic variation in the signal amplitude is visible at higher elevations (more pronounced at X-band than in S-band) | * Investigating the signal spectra during tracking a periodic variation in the signal amplitude is visible at higher elevations (more pronounced at X-band than in S-band) | ||
| - | * This is probably caused by the antenna tracking system (still "stepwise"?) | + | |
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| | | ||
| **Comments**: | **Comments**: | ||
| - | * If the satellite becomes too fast track (high elevation) the antenna has problems to catch the track again | + | * If the satellite becomes too fast to track (high elevation) the antenna has problems to catch the track again |
| * If there is a rise and set section and the satellite is not observable in between ==> Only observe one of the sections. | * If there is a rise and set section and the satellite is not observable in between ==> Only observe one of the sections. | ||
/home/www/auscope/opswiki/data/attic/wg7/apod/apod_obs_auscope.1480060091.txt.gz · Last modified: 2016/11/25 07:48 by Andreas Hellerschmied
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