NSF award 2442928 · Johns Hopkins University

Measuring the Largest Angular-Scale CMB Polarization from a Ground-based Surveyor

Final report due

28 January 2029

in 833 days · The award ends on 30 September 2028.

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Decide about an extension2 Jun 2028in 593 days
award ending 2028-09-30 · Research.gov
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Extension request16 Aug 2028in 668 days
award ending 2028-09-30 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice20 Sep 2028in 703 days
award ending 2028-09-30 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due28 Jan 2029in 833 days
award ending 2028-09-30 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due28 Jan 2029in 833 days
award ending 2028-09-30 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out28 Jan 2029in 833 days
award ending 2028-09-30 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 30 September 2028.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 28 January 2029.

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Award card

Award number: 2442928
Period of support: 1 Oct 2025 – 30 Sep 2028
Amount: $4,198,773
Awardee: Johns Hopkins University, Baltimore, MD
Program: MID-SCALE INSTRUMENTATION
Directorate: MPS

Abstract

The Cosmology Large Angular Scale Surveyor (CLASS) is uniquely built to probe the largest angular scales in the cosmic microwave background (CMB) polarization from its high site in Chile’s Atacama Desert. It has already produced polarization maps of 75% of the sky. This award supports observations and data analysis to develop instrumentation, observing strategies, and analysis techniques to understand and reduce…

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