CDA: Resource Record Summary

Resource Record Summary

Catalog Service:
Chandra X-ray Observatory Data Archive

Short name: CDA IVOA Identifier: ivo://cxc.harvard.edu/cdaPublisher: Chandra X-ray Observatoryivo://cxc.harvard.edu/cxo[Pub. ID] More Info: http://cxc.harvard.edu/cda/ VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 2004 Dec 02 00:00:00Z
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Description

The Chandra X-ray Observatory is the U.S. follow-on to the Einstein Observatory. Chandra was formerly known as AXAF, the Advanced X-ray Astrophysics Facility, but renamed by NASA in December, 1998. Originally three instruments and a high-resolution mirror carried in one spacecraft, the project was reworked in 1992 and 1993. The Chandra spacecraft carries a high resolution mirror, two imaging detectors, and two sets of transmission gratings. Important Chandra features are: an order of magnitude improvement in spatial resolution, good sensitivity from 0.1 to 10 keV, and the capability for high spectral resolution observations over most of this range.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

Publisher: Chandra X-ray Observatoryivo://cxc.harvard.edu/cxo[Pub. ID]

Creator: Chandra X-ray Center

Contact Information:

X Chandra Data Archive, Chandra X-ray Center
Email: archelp at cfa.harvard.edu
Address: 60 Garden Street MS 67
Cambridge
MA 02138
USA

Status of This Resource

This section provides some status information: the resource version, availability, and relevant dates.

Version: n/a
Availability: This is an active resource.

This service apparently provides only public data

This resource was registered on: 2004 Dec 02 00:00:00Z
This resource description was last updated on: 2019 Jul 18 00:00:00Z

What This Resource is About

This section describes what the resource is, what it contains, and how it might be relevant.

Resource Class: CatalogService: This resource is a service that provides access to catalog data. You can extract data from the catalog by issuing a query, and the matching data is returned as a table.

Resource type keywords: Archive	Subject keywords: X-ray astronomy galaxies quasars stars X-ray photometry spectroscopy variability
Intended audience or use: Research: This resource provides information appropriate for supporting scientific research. University: This resource provides information appropriate for use in university education. Community College: This resource provides information appropriate for use in community/junior college or early university education.
More Info: http://cxc.harvard.edu/cda/
Related Resources: This resource is derived from: Chandra Data Archive ivo://cxc.harvard.edu/cda [Res. ID]

	Data Coverage Information
	This section describes the data's coverage over the sky, frequency, and time. Reference Coordinate System: UTC-FK5-TOPOXXivo://STClib/CoordSys#UTC-FK5-TOPO[Res. ID] Typical Size Scale (Region of Regard): , 0.25 arcsec Wavebands covered: X-ray

Available Service Interfaces

Simple Cone SearchXXSearch Me

This is a standard IVOA service that takes as input a position in the sky and a radius and returns catalog records with positions within that radius.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for the standard interface:

https://cda.harvard.edu/cxcscs/coneSearch?

Maximum search radius accepted: 10 degrees
Maximum number of matching records returned: 100000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.

	Table Access ProtocolXX
	This is a standard IVOA service that takes as input an ADQL or PQL query and returns tabular data. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for the standard interface: https://cda.harvard.edu/cxctap

	VOSI CapabilitiesXX
	This is a standard IVOA service endpoint that returns the detailed capabilities of the main IVOA standard service. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for the standard interface: https://cda.harvard.edu/cxctap/capabilities

	VOSI AvailabilityXX
	This is a standard IVOA service endpoint that returns information about the availability and uptime of the main IVOA standard service. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for the standard interface: https://cda.harvard.edu/cxctap/availability

	Custom Service
	This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for this service interface: URL-based interface: https://cda.harvard.edu/cxctap/tables

	Custom Service
	This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for this service interface: URL-based interface: https://cdaftp.cfa.harvard.edu/cxc-hips Role: std