2023 July - Revision history

Oweng: /* July 26 */

2023-07-28T17:34:01Z

July 26

← Older revision		Revision as of 17:34, 28 July 2023
Line 17:		Line 17:
	== July 26 ==		== July 26 ==
	'''15:00 UT''' ACC needed to be restarted.		'''15:00 UT''' ACC needed to be restarted.

			== July 28 ==
			'''17:22 UT''' ACC locked up again. I perfomed a full power cycle.

Oweng at 15:05, 26 July 2023

2023-07-26T15:05:31Z

← Older revision		Revision as of 15:05, 26 July 2023
Line 14:		Line 14:
	== July 25 ==		== July 25 ==
	'''17:00 UT''' LNA Drain voltages on the 27m were all zero. I restarted the LNA and also rebooted the brick and antenna controller.		'''17:00 UT''' LNA Drain voltages on the 27m were all zero. I restarted the LNA and also rebooted the brick and antenna controller.

			== July 26 ==
			'''15:00 UT''' ACC needed to be restarted.

Oweng at 18:50, 25 July 2023

2023-07-25T18:50:06Z

← Older revision		Revision as of 18:50, 25 July 2023
Line 11:		Line 11:

	'''23:06 UT''' Still no good. I went through the calculation and pointed out what is needed, but it means machining new slots in the plate, so there will be a delay of a day or so.		'''23:06 UT''' Still no good. I went through the calculation and pointed out what is needed, but it means machining new slots in the plate, so there will be a delay of a day or so.

			== July 25 ==
			'''17:00 UT''' LNA Drain voltages on the 27m were all zero. I restarted the LNA and also rebooted the brick and antenna controller.

Dgary: /* July 24 */

2023-07-25T00:07:52Z

July 24

← Older revision		Revision as of 00:07, 25 July 2023
Line 9:		Line 9:
	== July 24 ==		== July 24 ==
	'''17:23 UT''' The feed orientation was off by 45 degrees. Owen traced that to having the plate installed backwards, so it is now flipped and the orientation should be right. I am doing a SOLPNTCAL to check it.		'''17:23 UT''' The feed orientation was off by 45 degrees. Owen traced that to having the plate installed backwards, so it is now flipped and the orientation should be right. I am doing a SOLPNTCAL to check it.

			'''23:06 UT''' Still no good. I went through the calculation and pointed out what is needed, but it means machining new slots in the plate, so there will be a delay of a day or so.

Dgary: /* July 22 */

2023-07-24T17:24:43Z

July 22

← Older revision		Revision as of 17:24, 24 July 2023
Line 6:		Line 6:
	== July 22 ==		== July 22 ==
	'''00:10 UT''' The new feed + radome was installed on Ant 11 and the control files were changed to add Ant 11 tracking. The pointing measurement at 21:30 UT shows that Ant 11 is not pointing well in HA, so this needs to be updated. I will take more measurements tomorrow and adjust the pointing. The phase calibration at 23:14 UT showed coherence at low frequencies on Ant 11, so I was able to adjust the delay (about 3 ns) to optimize that. We have a weekend coming up, so we won't be able to explore focus adjustments, but I will do a series of observational tests with this current focus over the weekend.		'''00:10 UT''' The new feed + radome was installed on Ant 11 and the control files were changed to add Ant 11 tracking. The pointing measurement at 21:30 UT shows that Ant 11 is not pointing well in HA, so this needs to be updated. I will take more measurements tomorrow and adjust the pointing. The phase calibration at 23:14 UT showed coherence at low frequencies on Ant 11, so I was able to adjust the delay (about 3 ns) to optimize that. We have a weekend coming up, so we won't be able to explore focus adjustments, but I will do a series of observational tests with this current focus over the weekend.

			== July 24 ==
			'''17:23 UT''' The feed orientation was off by 45 degrees. Owen traced that to having the plate installed backwards, so it is now flipped and the orientation should be right. I am doing a SOLPNTCAL to check it.

Dgary: /* July 16 */

2023-07-22T00:19:16Z

July 16

← Older revision		Revision as of 00:19, 22 July 2023
Line 3:		Line 3:
	== July 16 ==		== July 16 ==
	'''23:00 UT''' In the afternoon all of the Laird temperature controllers stopped regulating, allowing the FEMs to reach >40 C. This was likely heat-related due to unusually high ambient temperatures. Things were back to normal by the next day.		'''23:00 UT''' In the afternoon all of the Laird temperature controllers stopped regulating, allowing the FEMs to reach >40 C. This was likely heat-related due to unusually high ambient temperatures. Things were back to normal by the next day.

			== July 22 ==
			'''00:10 UT''' The new feed + radome was installed on Ant 11 and the control files were changed to add Ant 11 tracking. The pointing measurement at 21:30 UT shows that Ant 11 is not pointing well in HA, so this needs to be updated. I will take more measurements tomorrow and adjust the pointing. The phase calibration at 23:14 UT showed coherence at low frequencies on Ant 11, so I was able to adjust the delay (about 3 ns) to optimize that. We have a weekend coming up, so we won't be able to explore focus adjustments, but I will do a series of observational tests with this current focus over the weekend.

Dgary: Created page with "[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log] == July 16 == '''23:00 UT''' In the afternoon all of the Laird temperature controllers stopped regulating, allowing the FEMs to reach >40 C. This was likely heat-related due to unusually high ambient temperatures. Things were back to normal by the next day."

2023-07-20T11:52:51Z

Created page with "[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log] == July 16 == '''23:00 UT''' In the afternoon all of the Laird temperature controllers stopped regulating, allowing the FEMs to reach >40 C. This was likely heat-related due to unusually high ambient temperatures. Things were back to normal by the next day."

New page

[http://www.ovsa.njit.edu/wiki/index.php/Expanded_Owens_Valley_Solar_Array#Observing_Log Back to Observing Log]

== July 16 ==
'''23:00 UT''' In the afternoon all of the Laird temperature controllers stopped regulating, allowing the FEMs to reach >40 C. This was likely heat-related due to unusually high ambient temperatures. Things were back to normal by the next day.