The CADC website is undergoing major changes to improve appearance, web content accessibility and functionality in both official languages. The goal is to provide simpler and more effective ways to access CADC services. Many older CADC web pages will no longer be accessible after April 2014. If you require assistance with this transition please email us here cadc@nrc.gc.ca .

Le site du CCDA subit une transformation majeure pour améliorer l'apparence, l'accessibilité aux contenus Web et la fonctionnalité dans les deux langues officielles. L'objectif est de fournir des moyens simples et plus efficaces pour accéder aux services du CCDA. De nombreuses pages Web anciennes du CCDA ne seront plus accessibles après avril 2014. Si vous avez besoin d'aide avec cette transition, s'il vous plaît, communiquez avec nous ici ccda@cnrc.gc.ca.

The Canadian Astronomy Data Centre
Herzberg Institute of Astrophysics
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The Canadian Galactic Plane Survey Archive
The VLA Galactic Plane Survey Archive

CGPS Archive help


The CGPS archive is very simple. The survey of the galactic plane has been segmented in different regions (or mosaics). For each mosaics, a number of observations in multiple wavelengths / frequencies has been regridded to the same pixel scale in order to ease the comparaison.

One could find the observation nd processing status of each mosaic here

There is only a single form to query the CGPS archive using three (3) distincts methods:

  1. By Mosaic designation: If one knows the mosaic name or the L,B coordinate of its target, just select the right mosaic and hit the "search the catalogue" button.
  2. By astronomical source name: Just type in the name of your astronomical object and it will be resolved in coordinates using NED and or Simbad.
  3. By galactic or equatorial coordinates: If you already know the coordinate of your object, just type them in and hit the "search" button. Please be caraful because the space coverage of the CGPS is rather small.

Then one could specify any other mosaic parameters like the observation band