This is how to use
In order to to submit your request press the "
button. If you want to reset all the fields back to the way they where
before you started entering qualifiers in them, press the
reset" button. (You could try to edit the "Exp.Start"
field above and then press the "Reset" button).
|Setting up output modes|
The data is presented in tabular format with special action fields.
How to limit the number of retrieved records?
Right now, there is a default limit of 100 in number of records one can retrieve from the database.
If you are
reaching this limit in your query result, there is more likely other entries which match your
query. Or you will have to modify the limit, or specify your query. Please note that for internal
reasons, there is a hardcoded limit setup to 500 records.
Want more info on each retrieved records?
For each records retrieved from the archive, there is a more link written as M. This allows
the user to retrieve all known information concerning this particular entry independently
of the field selected.
You want to use a full screen mode output?.
There is a selection box on each form wich allows the user to be able to retrieve the
information from each archive in full screen mode instead of the default tabular format.
This is quite usefull when only few records are expected since this mode could generates
a tremendous amount of information.
|What about those preview modes|
|Preview Mode||Description||.mailcap entry|
|CADC|| The CADC preview mode is a very special one. It does allow transmission of a
specially compressed image directly to a special CADC viewer which then, call the necessary
display system. This make possible sequential display without having to start a new instance
of the viewer. Unfortunately, it is available only on SUN platforms (SUSOS and Solaris).
The package includes three executable.
||cadc/x-preview; mddisplay %s|
|GIF||The GIF preview mode is a simplle way to tranmit an image to a browser. Those images are usually highly compressed and are only 8 bit color, suitable for display to be display on a wide variety of systems. No image analysis is available through this mode. But it is the fastest.||No action required since most browsers can display GIF files|
|FITS||The FITS preview mode is a simple fits transmission from the CADC WEB server. It is up to the user to specify the action upon complete recption of the file. The most likely action would be to display the file using popular FITS viewer such as SAOimage. Our FITS image header includes WCS conversion. We strongly recommend using the latest version of SAOimage 1.14 which is capable of displaying RA and DEC from standard FITS images which have the World Coordinate System keywords in their headers.|| application/x-fit; saoimage -fits %s
application/x-fits; saoimage -fits %s
A new button is now showing up when browsing the HST catalogue. It is used to be able to look at the PC preview of all WFPC2 observations when available. Please be warned that it is not always possible to generate a PC preview. Also, because of some limitations of our retrieval system, the button will show up even for non WFPC2 instrument.
|What about the target name|
The second mode is using the default archive target name for the search, without resolving it in cooordinates. The research based on this mode are useful only when non astronomical objects are wanted (i.e. observations for the medium depth sky survey)
We do not offer directly object classes search. One have to pass through cross correlation catalogues for this.
|What about those other links|
|Link name||Short description||Exemple|
|Universal||Gateway to all other CADC links to other services and archives||http://cadcwww.dao.nrc.ca/cadcbin/universal/|
|IRAS||Link to the IRAS HCON images server at CADC||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/iras|
|SIMBAD||Query Simbad around the coordinate of this retrieved observation||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/simbad|
|HST archive||Query the HST archive around the coordinate of this retrieved observation||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/hst|
|CFHT archive||Query the CFHT archive around the coordinate of this retrieved observation||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/cfht|
|ESO archive||Query the ESO archive (NTT) around the coordinate of this retrieved observation||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/eso|
|NED access||Query NED around the coordinate of this retrieved observation||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/ned|
|Digitized Sky Survey access
|Query the Digitized Sky Survey access survey around the coordinate of this retrieved observation.||http://cadcwww.dao.nrc.ca/cadcbin/universal/1212+12/0010/dss|
|How to get data from CADC?|