The Limiting Sensitivity Search web service conducts a position based search of the Chandra Source Catalog (CSC). One specifies the right ascension (RA) in decimal degrees, declination (DEC) in decimal degrees, and search radius (SR) in arcminutes and receives the limiting sensitivity in units of erg cm^-2 s^-1 (flux_sens_) and photons cm^-2 s^-1 (photflux_sens_) for each of the CSC science energy bands.

The base URL of the Chandra Source Catalog Limiting Sensitivity Search is

http://cda.cfa.harvard.edu/csclimsen/limsen

The service accepts the following parameters in the HTTP query:

• RA - Right Ascension in decimal degrees
• DEC - Declination in decimal degrees
• SR - Search Radius in arcminutes

A limiting sensitivity search request may be executed on the Unix command line using the HTTP query syntax with a command-line tool such as cURL or Wget. A search on the position 246.7925, -24.32027, using a search radius of 1.66 arcminutes, would appear as follows, where we perform the query using Wget:

wget -O out.vot 'http://cda.cfa.harvard.edu/csclimsen/limsen?RA=246.7925&DEC=-24.32027&SR=1.66'

Alternatively, a form has been provided which will perform a Limiting Sensitivity Search.