Celebrating 25 Years of Chandra

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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Chandra Legacy Program
Call for White Papers

The CXC has announced the Chandra Legacy Program (CLP), a special opportunity focused on crucial results that require Chandra's unique capabilities to break new scientific ground and/or complement new and far-reaching observations in other wavelength regimes. The first stage of the CLP is a call for white papers due January 22, 2024.

More information is available here.

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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.

See the full announcement for more detail.