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### B.2.9 TwoQZ

Specialist functions for use with data from the the 2QZ survey. Spectral data are taken directly from the 2QZ web site at http://www.2dfquasar.org/.

`image2QZ( name )`
  Displays the postage stamp FITS image for a 2QZ object in an image viewer.

  - Parameters:
    - `name` (String): object name (NAME column)
  - Return value
    - (String): short log message
`jpeg2QZ( name )`
  Displays the postage stamp JPEG image for a 2QZ object in an external viewer.

  - Parameters:
    - `name` (String): object name (NAME column)
  - Return value
    - (String): short log message
`get2qzSubdir( name )`
  Returns the name of the subdirectory (such as "ra03_04") for a given 2QZ object name (ID).

  - Parameters:
    - `name` (String): ID of object within the 2QZ catalogue (like J120437.7-021003)
  - Return value
    - (String): subdirectory name
`TWOQZ_SPEC_BASE`
  String prepended to the object NAME for the FITS spectra file URL.

`TWOQZ_SPEC_TAIL`
  String appended to the object NAME for the FITS spectra file URL.

`TWOQZ_FITS_IMAGE_BASE`
  String prepended to the object NAME for the FITS postage stamp URL.

`TWOQZ_FITS_IMAGE_TAIL`
  String appended to the object NAME for the FITS postage stamp URL.

`TWOQZ_JPEG_IMAGE_BASE`
  String prepended to the object NAME for the JPEG postage stamp URL.

`TWOQZ_JPEG_IMAGE_TAIL`
  String appended to the object NAME for the JPEG postage stamp URL.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@jiscmail.ac.uk