2017 January - Revision history

Dgary at 11:12, 2 April 2017

2017-04-02T11:12:57Z

← Older revision		Revision as of 11:12, 2 April 2017
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			[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

	= Jan 03 =		= Jan 03 =
	'''15:00 UT''' Rebooted ROACHes due to bad communication with Roach 1.		'''15:00 UT''' Rebooted ROACHes due to bad communication with Roach 1.

Dgary: /* Jan 27 */

2017-01-28T12:17:56Z

Jan 27

← Older revision		Revision as of 12:17, 28 January 2017
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	'''04:28 UT''' I am doing a long series of interferometric pointing measurements, using the high-frequency receiver on band 14. One scan was missed up to now due to bad Ant 14 tracking (Dec PERMIT).		'''04:28 UT''' I am doing a long series of interferometric pointing measurements, using the high-frequency receiver on band 14. One scan was missed up to now due to bad Ant 14 tracking (Dec PERMIT).

	'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight.		'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight. (I checked later, and the error seems to have occurred around 11:17 UT, midway into the 11:02 UT scan. We have 21 good scans.)

	'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred on Jan 25!		'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred on Jan 25!

Dgary: /* Jan 28 */

2017-01-28T12:15:19Z

Jan 28

← Older revision		Revision as of 12:15, 28 January 2017
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	= Jan 28 =		= Jan 28 =
	'''04:37 UT''' I am rerunning the pointing observations. So far they have gone without interruption from 00:45 UT. The wind is low, so barring an Ant14 Dec problem, the observations should go well.		'''04:37 UT''' I am rerunning the pointing observations. So far they have gone without interruption from 00:45 UT. The wind is low, so barring an Ant14 Dec problem, the observations should go well.

			'''12:06 UT''' When I checked this morning, Ant 14 was found to have an HA cable tension alarm. That is bad news--we will not be able to continue any measurements with it until it is fixed, which means Monday at the earliest. It is currently at a large HA angle (-51). Looks like it died at 05:43 UT.

Dgary: /* Jan 27 */

2017-01-28T04:39:35Z

Jan 27

← Older revision		Revision as of 04:39, 28 January 2017
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	'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred on Jan 25!		'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred on Jan 25!

			= Jan 28 =
			'''04:37 UT''' I am rerunning the pointing observations. So far they have gone without interruption from 00:45 UT. The wind is low, so barring an Ant14 Dec problem, the observations should go well.

Dgary: /* Jan 27 */

2017-01-27T13:21:43Z

Jan 27

← Older revision		Revision as of 13:21, 27 January 2017
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	'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight.		'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight.

	'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred ~~yesterday~~!		'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred on Jan 25!

Dgary: /* Jan 27 */

2017-01-27T13:21:12Z

Jan 27

← Older revision		Revision as of 13:21, 27 January 2017
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	'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight.		'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight.

			'''13:20 UT''' I gave up on the pointing observations, since the wind is now steady at 20 mph. There will be some good observations up to whenever the Dec PERMIT error occurred. I will likely have to try again tonight after the Sun sets. NB: Bin reports a first "burst" image from a small B8 flare that occurred yesterday!

Dgary: /* Jan 27 */

2017-01-27T11:49:32Z

Jan 27

← Older revision		Revision as of 11:49, 27 January 2017
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	= Jan 27 =		= Jan 27 =
	'''04:28 UT''' I am doing a long series of interferometric pointing measurements, using the high-frequency receiver on band 14. One scan was missed up to now due to bad Ant 14 tracking (Dec PERMIT).		'''04:28 UT''' I am doing a long series of interferometric pointing measurements, using the high-frequency receiver on band 14. One scan was missed up to now due to bad Ant 14 tracking (Dec PERMIT).

			'''11:40 UT''' I found Ant 14 with a Dec PERMIT condition when I looked this morning. I got it tracking just as a WINDSCRAM occurred. I do not know when the observations were interrupted, or how many pointings were successful overnight.

Dgary: /* Jan 26 */

2017-01-27T04:31:08Z

Jan 26

← Older revision		Revision as of 04:31, 27 January 2017
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	'''13:20 UT''' Updated delays according to Bin's analysis of 02:10 UT 3C84 data. New delays take effect in scan starting at 13:20 UT. I used the sign of Bin's delays directly. (Analyzed results confirm that most changes are good. Some antennas may still be problematic).		'''13:20 UT''' Updated delays according to Bin's analysis of 02:10 UT 3C84 data. New delays take effect in scan starting at 13:20 UT. I used the sign of Bin's delays directly. (Analyzed results confirm that most changes are good. Some antennas may still be problematic).

			= Jan 27 =
			'''04:28 UT''' I am doing a long series of interferometric pointing measurements, using the high-frequency receiver on band 14. One scan was missed up to now due to bad Ant 14 tracking (Dec PERMIT).

Dgary: /* Jan 26 */

2017-01-26T14:05:40Z

Jan 26

← Older revision		Revision as of 14:05, 26 January 2017
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	'''12:55 UT''' Discovered that Ant 14 was not tracking, with PERMIT fault on Dec axis. Data before now is probably no good. I rebooted and resumed, but the antenna had another fault before reaching the source. Another reboot, and it is tracking now. Ambient temp is only 16 F. Barring another fault, good data should be between 12:55 - 15:40 UT.		'''12:55 UT''' Discovered that Ant 14 was not tracking, with PERMIT fault on Dec axis. Data before now is probably no good. I rebooted and resumed, but the antenna had another fault before reaching the source. Another reboot, and it is tracking now. Ambient temp is only 16 F. Barring another fault, good data should be between 12:55 - 15:40 UT.

	'''13:20 UT''' Updated delays according to Bin's analysis of 02:10 UT 3C84 data. New delays take effect in scan starting at 13:20 UT. I used the sign of Bin's delays directly.		'''13:20 UT''' Updated delays according to Bin's analysis of 02:10 UT 3C84 data. New delays take effect in scan starting at 13:20 UT. I used the sign of Bin's delays directly. (Analyzed results confirm that most changes are good. Some antennas may still be problematic).

Dgary: /* Jan 26 */

2017-01-26T13:21:19Z

Jan 26

← Older revision		Revision as of 13:21, 26 January 2017
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	'''12:55 UT''' Discovered that Ant 14 was not tracking, with PERMIT fault on Dec axis. Data before now is probably no good. I rebooted and resumed, but the antenna had another fault before reaching the source. Another reboot, and it is tracking now. Ambient temp is only 16 F. Barring another fault, good data should be between 12:55 - 15:40 UT.		'''12:55 UT''' Discovered that Ant 14 was not tracking, with PERMIT fault on Dec axis. Data before now is probably no good. I rebooted and resumed, but the antenna had another fault before reaching the source. Another reboot, and it is tracking now. Ambient temp is only 16 F. Barring another fault, good data should be between 12:55 - 15:40 UT.

			'''13:20 UT''' Updated delays according to Bin's analysis of 02:10 UT 3C84 data. New delays take effect in scan starting at 13:20 UT. I used the sign of Bin's delays directly.