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Leicester Database and Archive Service
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ARNIE Help
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Downtime expected shortly as all LEDAS services are moved to a new server.

ARNIE Brief Help

The system allows you to,
  • Browse a wide variety of databases for astronomical information.
  • Copy on-line data products associated with some databases over the network.
  • Request near-line data products stored on our CD-ROM jukeboxes.

Step 1: Choose a database

Choosing a Database with Standard ARNIE:
You choose a database to browse by first selecting a database subset (mission or catalog type) from the middle left-hand panel of the front page. This selects a list of databases which are then displayed in the middle right-hand panel. Click on the "ARNIE" button next to the database you require. To see the database help for any database, click on the "HELP" button.

Choosing a Database with ARNIE Index:
Simply click on the "ARNIE" button next to the name of the database you wish to browse from the list, or click on "HELP" to view the database help.


Step 2: Compose your query

Once you've chosen a database to browse, you will be presented with a form which allows you to apply multiple cone and/or filter searches to your selected database. The filters are applied to the database parameters and can either be inclusive or exclusive. You can also input a name of an object and if it appears in the Simbad name database, ARNIE will "resolve" it into co-ordinates within the Cone Search section.

Not all the fields need be completed - only the ones you require for your particular search.

There is one "hidden" feature of ARNIE to note: to request all entries in the da tabase, leave all fields on the database query form blank.

As a search could produce thousands of entries (resulting in a very long wait before the corresponding html page with the results is written!) the form has a maximum display limit which the user can reset. There are also links to quick guides to the various sections of the form as well as to the Database Help which defines each parameter in the table and provides additional information on the contents of the database.


Step 3: Display results

When a query is submitted, the result is a page which tells you how many records are in the current subsample, a list of the current filters applied to the database and the current sub-sample displayed in a tabular format.

There are three ways to proceed from this point; refine the current search by clicking the "Refine <database> Query", abandon the current search a begin a new one by clicking on "New Query", or view any on-line data products by clicking the "PROD" button next to the entry whose products you wish to view.

At this point, any near-line products stored on our CD jukebox system can be requested by selecting the checkboxes next to the entries required, filling in your e-mail address in the space provided and clicking on "SUBMIT". To make it easier to request a large number of the available near-line products, use the "Invert Selection" checkbox to reverse the sense of the individual checkboxes.


Step 4a: Refine Subsample

When "Refine Query" is selected the display returns to the database query form, but with a list of the current filters applied to the database at the top. These existing filters can be switched on or off by clicking on the appropriate checkbox. Additional constraints on the sample can be applied using the query form as before.

Step 4b: New Subsample

When "New Query" is clicked, the default query form for the selected database is displayed. A fresh query can then be started.


 
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