(updated October 2, 2023)
The critical path continues to be tightly coupled to camera delivery followed by parallel activities of glass integration on the telescope and camera reverification on the summit. There was a one-week slip in the schedule as some testing of the camera and the M1M3 system caused forecast delays.
Project earned value toward the MREFC effort rose $3.1 million this month to a calculated $491.6 million. The cost variance changed by -$0.7 million this month to -$2.5 million, and the cost performance index held at 1.0. The schedule variance changed by -$0.6 million to -$10.8 million, which equates to a schedule performance index of 0.98. Four project controls change requests (LCRs) were implemented this month, requesting a total of $501,765 from contingency. As of the end of the month, the project has allocated 73% of the total contingency to the baseline through the change control process. The remaining contingency of $24.72 million is 78% of (TPCII -BAC -CV)/(EACII -ACWP ).
(ETC = Estimate to completion, BAC = Budget at completion, BCWP = Budgeted cost of work performed).
There are no changes to the Project completion forecast this month. The team has managed all emerging issues without schedule impacts to the overall Project.
Updated with post Covid replan dates pending agency approval
The table shows forecast dates, i.e., the Project’s current best estimate. There is, in addition, schedule contingency that is not included in those dates, amounting to about 6 weeks at present. It is likely that the Project will use most or all of that schedule contingency.
The schedule for science data is best estimated relative to the System First Light Milestone. The Operations Team, in consultation with the Rubin Construction Project, currently anticipate the following:
Financial support for Rubin Observatory comes from the National Science Foundation (NSF) through Cooperative Support Agreement No. 1202910, the Department of Energy (DOE) Office of Science under Contract No. DE-AC02-76SF00515, and private funding raised by the LSST Corporation. The NSF-funded Rubin Observatory Project Office for construction was established as an operating center under management of the Association of Universities for Research in Astronomy (AURA). The DOE-funded effort to build the Rubin Observatory LSST Camera (LSSTCam) is managed by the SLAC National Accelerator Laboratory (SLAC).
The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 to promote the progress of science. NSF supports basic research and people to create knowledge that transforms the future.
NSF and DOE will continue to support Rubin Observatory in its Operations phase. They will also provide support for scientific research with LSST data.
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