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| Stack Data | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Start | Stop | ee50 | ee80 | Hefi Focus | Mars Focus | Outside Temp | Dome Temp | Truss Temp | Wind Direction | Wind Speed | Stack Type | |
| 01:21 | 02:35 | 0.55 | 0.80 | 1030 | +974 | 1.3 | 1.7 | 2.1 | 106 | 3 | First of Night | |
| 04:57 | 06:15 | 0.48 | 0.78 | 1070 | +1816 | -1.3 | -1.3 | -1.0 | 76 | 13 | First of Night | |
| Problem Reports | ||||
|---|---|---|---|---|
| PR Number | Times | Time Lost | Description | Response |
| 4320 | 00:00-01:20 | 01:20 | At ops time dome air temperature was 8 degrees and chiller was running and set to 3 degrees. Because sunset temp was actually around 0 was not able to run AOA routine for a long time due to very bad dome seeing. | |
| 4319 | 03:22-04:57, 06:56 - 06:57, 08:39 - 08:40, 09:03 - 09:30 | 02:04 | When tracking or slewing at subzero temperatures, tracker motion will often cease due to Sensor error. Error is only visible when Fault Processing is set to Eng.Mode. In TCS mode it will look like HFC triggered for no reason. (It is very likely the sensor error. This is not connected with skews since many times it triggered when skew value was less than 5mm.) This seemed to happen particularly often between X positions of positive 800mm and 900mm. | |
| 4298 | 05:00-05:00 | 00:00 | Tonight got several torque limiter-related skews-- could tell because of clicking noise before skew. Usually occurred moving in positive X, and in positive X range. These occurred around a temperature of -1. | |
| 4318 | 05:00-05:00 | 00:00 | focusCurve fails on GSS target (More details from RA) | |
| Ops Comments | none |
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| TO Comments | Clear all night, but low temperature-related issues interfered greatly with tests. Discovered that when structure is already at target azimuth using HTOP loaded data with Go Next command takes MUCH LONGER than manually loading target and hitting Go Next. |
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| RA Comments | none |
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| Observations | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| File | Target/QID | Exp Start | Exposure | Overhead | Program | Instrument Configuration | Data Type | IQ | Dimm | SkySBrt | Skytrans | SNR | Comments | Charge | |