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We started the day checking the software once more and then powered down IGRINS.
The Calibration Unit was loaded into its box and computers were packed.
We disconnected the electronics cabinet and helium lines and loaded IGIRNS onto the transportation cart.
Then the electronics cabinet and helium lines were reattached an IGRINS stayed cold overnight.
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We started unloading the truck at 8:30am. Detailed procedures are on the Old Transportation Procedures page.
- TempTek: 1st floor, connected to glycol hoses
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IGRINS Installed onto telescope.
9/16/14
First night of observing.
SVC socket issue. I'll attach Ueejeong's email later.
9/17/14
The vacuum pressure was slightly higher (10^-6) than yesterday (10^-8).
The He compressor was not getting any chilled water supply so I checked the Temptek chiller and the glycol level was low.
Contacted Coyne and found that the main reservoir's glycol lost ~20 gallon and temptek lost ~4 gallon.
Filled with tap water and ice to cool it down quickly and the temperature of the chiller went down to 53.
The supply/return lines were not as cool as I remembered...