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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.
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6.2.3 Visible Spectro-Polarimeter (ViSP)
Spectral throughput spatial mapping data was collected in the DSSC labs using our custom metrology tools. The vendor data package was collected for all new spare filters as well as the original filter set. Analysis of this large data package is ongoing as it informed the low throughput detected in 486nm measurements some months ago.
6.2.4 Diffraction Limited Near-Infrared Spectro-Polarimeter (DL-NIRSP)
Some cold filters and samples have been sent for long wave IR throughput measurements to an outside vendor. Analysis of the DSSC data package on filter spatial transmission and blocking is ongoing.
6.2.5 Cryogenic Near-Infrared Spectro-Polarimeter (Cryo-NIRSP)
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6.2.6 Visible Broadband Imager
Improved out-of-band blocking for VBI is required when the upgraded FIDO grey beamsplitters are used. The final production dichroic bandpass blocking filters for VBI-Red were received at the DSSC. Initial measurements of optical density, filter spatial variation, and part-to-part performance variation have begun.
A set of prototype dichroic blocking filters for VBI-Blue were received. DSSC lab metrology was performed and adjustments to the coating design suggested to the vendor. Given possible coating throughput limitations, a SPEC document was developed and distributed to other vendors for quote.
6.7 Multi-Conjugate Adaptive Optics (MCAO)
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6.9 Infrared Cameras
7 Data Center Operations (Bob and Alisdair)
7.1 Hardware Infrastructure
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