Sept-Oct
2015 |
Painting of the interior and anti-room floor |
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Nov 30
2017 |
First Light |
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July
2018 |
Instrument shutdown for vaccum and lfc maintenance |
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Nov
2018 |
Shared Risk Science begins for the 18-3 period |
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Dec
2018 |
Normal Science Operations begins (the 19-1 period)
Dec
2018 |
New TSL key words added to support setup method and comparison lamp |
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Dec 25
2018 |
LFC comb went offline and began using the Etalon |
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Jan 6
2019 |
LFC repaired |
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Oct 23 6
2019 |
LFC briefly lost phase-lock but still functional |
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Nov 11-12
2019 |
LFC maintenance to improve efficiency; also replaced cal shutter controllers and a burned out UNe lamp. |
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Dec 11-14
2019 |
LFC offline; restored around 06:00 on 2019-12-14 UT. Dec 15-19
2019 |
LFC offline; restored before the night of 2019-12-20 UT. Jan 21
2020 |
Fiber agitator motor replaced |
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Feb 10
2020 |
HPF offline for 1 night (2020-02-11 UT) due to saturation from IHMP work. |
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Jul 14
2020 |
HPF observing low-precision targets only for 1 night (2020-07-15 UT) after LN2 vacuum jacketed lines were pumped. |
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Aug 5
2020 |
HPF unavailable for most of the night (2020-08-06 UT) after a software issue resulted in the detector being powered down for an hour or two. |
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Oct 16
2020 |
HPF observing low-precision targets only for 2 nights (2020-10-17 & 18 UT) after LN2 vacuum jacketed lines were pumped. |
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Dec 18
2020 |
HPF observing low-precision targets only for 1 night (2020-12-19 UT) after LN2 vacuum jacketed lines were pumped. |
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| throughout 2021 |
Multiple nights of low-precision targets only after pumping VJ lines (further occurrences not noted on this page). |
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Jun 14
2021 |
HPF observing low-precision targets only while LFC is having problems, starting 2021-06-15 UT for a few nights. |
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Aug 2-6
2021 |
HPF LFC team on site doing maintenance and improvements including replacing UNe and Alpha Bright lamps; no impact to precision or observations |
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Nov 1-10
2021 |
HPF offline for science while instrument team investigates problem with increasing bias pedestal level in detector |
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Dec 17
2021 |
HPF fiber scrambler motor replaced during the night after it fails while in use |
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Apr 7
2022 |
HPF fiber scrambler motor replaced during the afternoon when it stopped turning the belts |
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May 20 to June 14
2022 |
HPF offline for engineering work (electronics and dewar work inside the spectrograph enclosure; instrument itself remained sealed) |
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June 15
2022 |
HPF resumes low-precision observations as instrument stabilizes |
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Aug 1
2022 |
HPF resumes high-precision observations |
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