VLSS: Resource Record Summary

Resource Record Summary

Image Service:
VLA Low-frequency Sky Survey

Short name: VLSS IVOA Identifier: ivo://nasa.heasarc/skyview/vlssPublisher: NASA/GSFC HEASARCivo://nasa.heasarc/ASD[Pub. ID] More Info: https://skyview.gsfc.nasa.gov VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 2025 Feb 21 00:00:00Z
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Description

The VLA Low-Frequency Sky Survey (VLSS) is a 74 MHz continuum survey covering the entire sky north of -30 degrees declination. Using the VLA in BnA and B-configurations, it will map the entire survey region at a resolution of 80" and with an average rms noise of 0.1 Jy/beam. This version include the data from the VLSS redux which increased the coverage region slightly and substantially improved the data reduction. Details are in the Lane et al. (2012) reference. Provenance: VLSS Team: R.A. Perley, J.J. Condon, W.D. Cotton (NRAO); A.S. Cohen, W.M. Lane (NRC/NRL), N.E. Kassim, T.J.W. Lazio (NRL), W.C. Erickson (UMd). This is a service of NASA HEASARC.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

Publisher: NASA/GSFC HEASARCivo://nasa.heasarc/ASD[Pub. ID]

Creator: VLSS Team: R.A. Perley, J.J. Condon, W.D. Cotton (NRAO); A.S. Cohen, W.M. Lane (NRC/NRL), N.E. Kassim, T.J.W. Lazio (NRL), W.C. Erickson (UMd) Contributor: Skyview Project

Contact Information:

X SkyView Help
Email:

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

Relevant dates for this Resource:

Created: 2025 Feb 21

This resource was registered on: 2025 Feb 21 00:00:00Z
This resource description was last updated on: 2025 Feb 21 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 data (specifically, images). With this type of service, you can search for data by issuing a query, and information about available data is returned as a table.

Resource type keywords: Archive	Subject keywords: surveys
Intended audience or use: Research: This resource provides information appropriate for supporting scientific research.
More Info: https://skyview.gsfc.nasa.gov
Related Resources: This is a service for accessing data from: HEASARC ivo://nasa.heasarc [Res. ID]

	Data Coverage Information
	This section describes the data's coverage over the sky, frequency, and time. Reference Coordinate System: UTC-ICRS-TOPOXXivo://STClib/CoordSys#UTC-ICRS-TOPO[Res. ID] Sky Coverage: Regions covered: Wavebands covered: Radio

Available Service Interfaces

Simple Image AccessXX

This is a standard IVOA service used to search for images from this resource that overlap with a specified region of the sky.

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

https://skyview.gsfc.nasa.gov/cgi-bin/vo/sia.pl?survey=vlss&

Image service type: Cutout: images will be cut out to match the requested region.
Maximum query region accepted: no size limit
Maximum region size returned: no size limit
Maximum image size returned: X pixels
Maximum image size returned: 10 MB
Maximum number of matching records returned: 500

	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: Interactive web page: https://skyview.gsfc.nasa.gov/cgi-bin/query.pl