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This document describes the use of each fields on the VLAdb Web
forms.
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Submit
Pressing this button submits the request to be processed by VLAdb.
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Reset
Pressing this button restores all fields to default values, clears the
selectable fields and returns the form to the state which it had when
the user first entered it.
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Equinox
The user may select the Equinox year to be used with the Equatorial
coordinates. Only 1950 and 2000 are valid equinox for VLAdb,
if you choose `Either' you should be careful not to match
for coordinates as well, as a coordinate search demands one epoch or
the other.
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Coordinates
This field is used as the center of the field to be retrieved.
The RA may be specified as either hh mm ss or ddd.fff , i.e.,
in hours or in decimal degrees. The DEC may be specified as ddd mm ss
or ddd.fff , i.e., in degrees or decimal degrees. If an '*' is typed
for either RA or DEC then no restriction will be applied for that
axis.
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Examples:
6 45 10.76 -16 41 57.82
6 45 10.76, -16 41 57.82
6 45 10.76 *
*, -16 41 57.82
101.2948411 -16.6993947
101.2948411, -16.6993947
101.2948411, *
* -16.6993947
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Search Radius
This field is used to specify the search radius around the central
coordinates. The radius may be specified as either dd mm ss or dd.fff.
If no value is specified, a search radius of 1.0 degree will be used.
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Dates Range
A query can be limited in time with either of these two fields.
The recognized date formats are:
10-Jan-1995
10-jan-95
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Program ID
This field allows the selection of a specific program ID.
The field width is limited to 6 characters and is NOT case sensitive.
The normal wild cards ('*' and '?') can be used.
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Observer ID
This field allows the selection of a specific observer ID.
The field width is limited to 6 characters and is an INTEGER NUMBER.
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Source Name
This field allows the selection of a specific source.
The field width is limited to 16 charactersi and is NOT case sensitive.
The normal wild cards ('*' and '?') can be used.
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Array Configuration
This selection box allows the user to select data with the VLA in
one or more array configurations.
Mosaic users can select
multiple configurations either by dragging the mouse down the box with
the button pressed, or pressing the control-key simultaneously with
the mouse button when adding new selections. Pressing the control-key
with the mouse button will toggle the selection on and off.
Netscape users can select multiple choices simply by pressing
the mouse button on each desired choice.
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Correlator Mode
This selection box allows the user to chose data correlated with
one or more correlator modes.
Mosaic users can select
multiple configurations either by dragging the mouse down the box with
the button pressed, or pressing the control-key simultaneously with
the mouse button when adding new selections. Pressing the control-key
with the mouse button will toggle the selection on and off.
Netscape users can select multiple choices simply by pressing
the mouse button on each desired choice.
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Observing Band
This selection box allows the user to chose data with frequencies
corresponding to one or more specific Bands.
Mosaic users can select
multiple configurations either by dragging the mouse down the box with
the button pressed, or pressing the control-key simultaneously with
the mouse button when adding new selections. Pressing the control-key
with the mouse button will toggle the selection on and off.
Netscape users can select multiple choices simply by pressing
the mouse button on each desired choice.
The different bands with their frequency range are:
4 from 0.000 GHz to 0.1 GHz
P 0.101 0.7
L 0.701 3.0
C 3.001 7.0
X 7.001 12.0
U 12.001 18.0
K 18.001 35.0
Q 35.001 100.0
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Calibrator Code
This selection box allows the user to chose data with different
calibrator codes.
Mosaic users can select
multiple configurations either by dragging the mouse down the box with
the button pressed, or pressing the control-key simultaneously with
the mouse button when adding new selections. Pressing the control-key
with the mouse button will toggle the selection on and off.
Netscape users can select multiple choices simply by pressing
the mouse button on each desired choice.
The different calibrator code options with their definition are:
Not Not a calibrator
A Astrometric quality (position known to within 0.001")
B Near astrometric (position know to within 0.01")
C Not astrometric (position know to within 0.05")
T Point source; flux and position badly determined
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Array Processor Options
This selection box allows the user to chose data with different Array Processor
Options.
Mosaic users can select
multiple configurations either by dragging the mouse down the box with
the button pressed, or pressing the control-key simultaneously with
the mouse button when adding new selections. Pressing the control-key
with the mouse button will toggle the selection on and off.
Netscape users can select multiple choices simply by pressing
the mouse button on each desired choice.
The different Options with their definition follows:
Blank Continuum Mode
B Band Pass Normalize
H Hanning Smoothing
L Lag Spectrum (raw correlator output)
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Solar System Object
This selection box allows the user to chose data from a Solar System Object.
Mosaic users can select
multiple configurations either by dragging the mouse down the box with
the button pressed, or pressing the control-key simultaneously with
the mouse button when adding new selections. Pressing the control-key
with the mouse button will toggle the selection on and off.
Netscape users can select multiple choices simply by pressing
the mouse button on each desired choice.
The different Options with their definition follows:
No Not a Solar System ObjectContinuum Mode
Sun Observing the Sun
Other Any other solar system objec
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Time on Source
This input box allows users to search for scans longer than a
specified time. The form takes a number representing the minimum
amount of minutes to search for. Note: output from the search shows a
TOS (Time On Source) column measured in seconds, not minutes. Input is
in minutes as a convenience for the user.
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Show Test Modes
Previous versions of the catalog lookup program screened out hits that
were observed in the various `test modes'. This checkbox allows you to
decide whether to include them in your query.
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Additional Search Fields
Two additional search fields can be selected for a more generalized
query. The value desired for the selected search field has to be
entered in the related Text Box. It is the user's responsibility to
enter the correct format for the value (i.e. character strings or
numbers when expected).
The available search fields for both options are identical to
allow maximum flexibility. In the case where both fields selected are
the same the second one will be ignored.
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