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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 | |
| 00:10 | 01:52 | 0.62 | 0.91 | 1060 | -21 | 0.3 | 0.3 | 1.0 | 213 | 11 | First of Night | |
| ↪ Comments | lots of in dome seeing; a few mirrors seem out of focus at times; M86 M87 M19 M03 | |||||||||||
| Problem Reports | ||||
|---|---|---|---|---|
| PR Number | Times | Time Lost | Description | Response |
| 4298 | 02:23-12:21 | 09:58 | Tracker getting constant HFC and skews whenever the temp drops below 0C; unable to slew to any target or load trajectory. Testing resulting in finding a LX Slew torque limiter being triggered during every slew move. | Called: Herman, Emily unable to continue testing; torque limiter for LX slew at low temps possible problem; plenty of data and dspace recordings captured most of the errors and activity. |
| 2783 | 01:52-02:12 | 00:20 | DMI not returning a valid signal from tracker; testing involved dmi but no values returned. | Called: George upon looking at the DMI computer found that the return was under 1v at 8.4% had to bump up the power to 11% in order to get a valid 1v return |
| Ops Comments | none |
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| TO Comments | Testing most of the night with low temperature and skews occurring. Records show that this tracker has not been run at these low temps; previous low temp as around 1C |
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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 | |