CASDA Skymap Search

Overview | CASDA Skymap Search | Catalogue Summary | Popup summary | Aladin-Lite

Overview

The complete CASDA User Guide can be found at http://www.atnf.csiro.au/observers/data/casdaguide.html and covers alternate access methods such as Virtual Observatory tools and scripted/automated access.

This search facility allows users to search for Australian Square Kilometer Array Pathfinder (ASKAP) data taken from the facility in Western Australia, using an interactive Aladin-Lite sky map.

CASDA Skymap Search

To conduct a Skymap search:

  • Use the Target to select a location using object name or co-ordinates.
  • Select a Survey to display all catalogues in that survey. These are indicated on the Skymap with a red square.
    Click the ‘i’ icon to see a description of each Survey.
  • The selection of a red square is indicated by a green square. Note: this functionality may not be available in Internet Explorer – please try Chrome or FireFox.
  • Once a selection is made the details are displayed below the Skymap. The details will depend on the selected catalogue.
  • Image(s) relevant to the catalogue will be displayed in the thumbnail where available. Initial image loading may take a while, but images are cached so reloads will be quick.

Target

The default position is 2MASX J08161181-7039447. Enter an Object Name or RA and Dec to re-centre the view.

Surveys

The following are the Item Details and their associated Units for each Survey

RACS DR1 Galactic Region & ACS DR1 Non Galactic Region

Item DetailsUnits
Source Namen/a
RA (J200)deg
Dec (J200)deg
Integrated Flux DensitymJy
Peak Flux DensitymJy/beam
Major Axisarcsec
Minor Axisarcsec
Position Angledeg
Item Details and their associated Units for both the RACS DR1 Galactic Region & ACS DR1 Non Galactic Region surveys

SPICE-RACS DR1 cubelets

Item DetailsUnits
Source Namen/a
RA (J200)deg
Dec (J200)deg
Integrated Flux DensitymJy
Peak Flux DensitymJy/beam
Major Axisarcsec
Minor Axisarcsec
Position Angledeg
Item Details and their associated Units for the SPICE-RACS DR1 cubelets surveys

SPICE-RACS DR1 spectra

Item DetailsUnits
Source Catalog IDn/a
RA (ICRS)deg
Dec (ICRS)deg
Stokes I Flux DensityJy.beam-1
Stokes I Flux Density ErrorJy.beam-1
Polarized IntensityJy.beam-1
Polarized Intensity ErrorJy.beam-1
Fractional Polarizationn/a
SNR Pol Intensity n/a
Rotation Measurerad.m-2
Rotation Measure Errorrad.m-2
De-rotated Polarizationdeg
De-rotated Polarization Errordeg
RM Widthrad.m-2
Sigma_add Complexityn/a
Sigma_add Complexity Errorn/a
Instrumental Leakage Estimate    n/a
Item Details and their associated Units for the SPICE-RACS DR1 spectra surveys

WALLABY Pilot DR1

Item DetailsUnits
Source Namen/a
Right Ascension (J2000)deg
Declination (J2000)deg
Centroid FrequencyHx
Integrated FluxJy*Hz
Spectral Line WidthHz
Item Details and their associated Units for the WALLABY Pilot DR1 spectra surveys

Item Summary

Select “View item summary” to open a new tab with the Catalogue Summary. The summary provides details of catalogues for all data products available for the source.

Click “Download source files” to access associated source files (you must be logged in).

Parent Image

Select “View parent image” to view a popup summary with details of the parent image.

Catalogue Summary

To view the catalogue summary, select “View item summary” after selecting a source on the CASDA Skymap Search. The summary contains details about the available catalogues for all Catalogue Types for the selected source.

Click “Download source files” to access associated source files (you must be logged in).

Screenshot of CASDA SKymap Catalogue Summary page

Popup summary

The popup summary is a summary of the file selected on the CASDA Observation Search Results or the CASDA Skymap Search.

The display depends on the type of data product. See CASDA Image Cube Summary for an example of an Image Cube file.

Aladin-Lite

Coordinates 

J2000 (default) or Galactic.

Base image layer

default is the Rapid ASKAP Continuum Epoch Survey 1 Low Stokes I ( 887.5 MHz). Users can select from other available options.

Overlay layers

  • Reticle – default is checked to display the centre point of the view. Users can uncheck to not display.
  • HEALPix grid – default is unchecked. Users can check to display the grid.

Navigation

  • Pan – Use the mouse to move the view.
  • Zoom – Use the + and – buttons on the right side, or the mouse wheel, to move in or out. Default Field of View is 2 degrees.
  • Full screen – use arrows in top right of screen to open and close a full screen view.