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Daniel K. Inouye Solar Telescope
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1. Science/Technical Highlight (Anyone)
2. Photos (Anyone)
3. Directorate (Thomas and Dave)
3.1 Activities
3.2 Financial Status
DKIST operations carried forward approximately $28.16M in unencumbered funds into FY 2023 from previous years. A total of $X.XXM in new funding has been obligated by NSF thus far in FY 2023 for a total of $YY.YYM.
Financial status of
DKIST operational expenditures for August 2023 were $Z.ZZM
Total YTD expenditures for DKIST operations are $XX.XXM.
The average DKIST spending for FY 2023 (burn rate; BR) is $Y.YYM/month.
4. Science Operations (Ali and Andres)
4.1 Cycle 2 Experiment Generation
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Daily schedule during the OCP2.4 observing window ( - ):
Arrive at DSSC (carpools): 4:45am
Leaving DSSC: 5:00am
Arriving at site: 6:00am
Start Observatory Shutdown: 2:00pm
Leaving site: 2:30pm
Arrive at DSSC (end of day): 3:30pm
Science Operations schedules two Science Operations Specialists (SOS), and one Resident Scientist (RS) to support daily science operations at the summit.
5 Technical Operations (Heather and Paul)
5.1 Site & Facility Status
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6 Instrumentation Operations (Bret, Friedrich, and Dave H.)
6.1 Optics
6.1.1 System Optics
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The GS50T950 beam splitter has shipped to Maui
The redward drift of FIDO coating performance identified during ViSP 486nm observations is being assessed with additional ellipsometric data on coating witness samples. Additional metrology at the vendor is also being performed and processed by the DKIST team.
The GS30T500 back side AR coating was done and coating stress interferometry data collected. The front side dichroic coating was adjusted to be slightly thicker per spectral metrology results. Stress test coatings are scheduled for next month.
6.1.3 Polarization Analysis and Calibration (PA&C)
Coating development is progressing on the fringe-suppressed Cryo-NIRSP modulator upgrade project. Multiple additional coating runs are being done and assessed by the DKIST team to attempt fringe suppression at specific spectral line wavelengths.
The MgF2 optical contact bonding post-fluid-jet-deterministic-polish (FJP) project received the first round of polished crystals for assessment at the DSSC Maui labs in our custom built spectropolarimeter (NDSP). Polishing results seem to indicate some anomalous polishing rates and similar non-uniform material properties. Our 4D PhaseCam profilometer was used to measure the surface micro-roughness impacts from the FJP processs. Assessment and data analysis is ongoing. An optical contact bond test will be performed in the coming weeks.
The upgraded NDSP lab spectropolarimeter was used to measure the very large (160x90mm) retarder received from deterministic fluid jet polishing and zero-heat ion assist coatings. This retarder is part of the ViSP beam balancing project for mitigation of grating induced polarization using DKIST-team created retarder designs. Additional progress was made at the vendor in fabrication of a set of smaller retarders (98x58mm) also required as part of this upgrade project. The DKIST team played an active part in re-optimizing the designs and doing manufacturing tolerance analysis.
6.2 Summit Instrumentation
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6.9 Infrared Cameras
7 Data Center Operations (Bob and Alisdair)
7.1 Hardware Infrastructure
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