Chandra's Exceptional Performance Amid Proposed Budget Reductions

The Chandra X-ray Observatory is operating with exceptionally high efficiency and continues to revolutionize our understanding of the universe and our place in it, including capturing spectacular images of exploded stars, black hole eruptions and other exotic phenomena. While all spacecraft experience degradations, particularly after being in space for nearly 25 years like Chandra has, Chandra scientists and engineers have continued creating solutions to these challenges, an achievement that has been recognized by NASA and independent review panels. This has been done essentially without any increased costs to NASA. Chandra is the only current or planned telescope for many years that has the sharp X-ray vision needed to answer many fundamental questions in astrophysics.

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A Letter to the Community

Celebrating 25 Years of Chandra

Chandra Legacy Program
Call for Proposals

The CLP Review Committee completed its evaluation of white papers and presented recommendations for major science initiatives to the CXC Director. These recommendations have been used to form the themes of the Call for Legacy Proposals.

CLP Letters of intent are due March 28, 2024 and proposals are due April 15, 2024.

Full information is available on the CLP page.

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Chandra Cycle 26 Call for Proposals Released

The CXC is pleased to announce the release of the Chandra Cycle 26 Call for Proposals (CfP). The Call for Proposals, Proposers' Observatory Guide (POG), proposal planning software, and general information are posted on the Proposer web page.

Proposals Due: March 14 2024 6 p.m. EDT

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Preliminary Chandra Source Catalog 2.1 Cross-Matched to Optical/IR Catalogs and SDSS Spectroscopy

Using the NWAY algorithm (Salvato, M. et al. 2018, MNRAS, 473, 4937), we have crossmatched the set of X-ray sources extracted from the CSC 2.1 production-current database on 14 November 2022 (387k sources) to four catalogs—Gaia DR3, Legacy Survey DR10, PanSTARRS-1, and 2MASS, finding counterparts for 229k CSC 2.1 production current database sources.

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