TOOLS HELP Viewer browse CatsEye plot IMPReSS observations What's New Tutorial Feedback

You access AEQ by simply directly typing in the request as a URL in your browser, or by generating the link with your own script. To use AEQ, you must have the correct metadata set for each catalog you're interested in. This information is available online in the ADC Holdings documentation. Machine readable documentation can be acquired for most holdings by contacting a representative listed below. AEQ is meant primarily for large-scale, non-interactive purposes, such as inter-data-center queries.

An AEQ query is of the form (also, see the example below):

http://adc.astro.umd.edu/cgi-bin/viewer/cull.pl?catalog=CatName&file=FileName&fields=FieldNames&...&user=AEQ

The query must contain the following:
• catalog - ADC serial number for the catalog
• file - ADC name for the individual file within the catalog.
• fields - pipe delimited list of field names in output table. This must exactly match the ADC ReadMe label names and is case sensitive. In fact, both the name and value of the query are case sensitive. An option here is to use fields=all, which returns all fields in the catalog.

  In addition, the following options are available:

• download="T" (or any non-zero value) - creates a content-type header that automatically brings up the "Save as..." window on most browsers. To have the table display on the screen in "text/plain" format, leave this parameter out.
• FieldNameMin and FieldNameMax where FieldName is one of the fields present in the field parameter string. This restricts the range of output records to those records with values above or below a certain value for a field. Either one or both can be specified for any field that has numeric values. At this point the RA and Dec mins and max values are taken to be at the equinox given in the catalog, but we are working on allowing the user to specify these in arbitrary equinox. Also, for now the RA and Dec are specified with no blanks between components as in 1012 for 10h 12m.

• Field names
• Field units
• Field formats
• Field Descriptions
• Data

An example query to AEQ (try it):

http://adc.astro.umd.edu/cgi-bin/viewer/cull.pl?catalog=7004A&file=zwicky.dat&fields=RA|DE|SGLON|SGLAT|ClusRad|Pop&RAMin=01+00&RAMax=03+20&DEMin=10+00&DEMax=35+00&PopMin=1500&user=AEQ

This request outputs:

# This file contains the metadata and data for an AEQ table.
# The header containing metadata ends at "EOH"; the data follows.
# All metadata and data are pipe-delimited: " | "
# All data lines end with "$"
# The table metadata format is as follows:
#   catalog | catalog long name
#   file | file description
#   field names
#   units
#   FORTRAN formats, separated by commas
#   Values denoting blank entries
#   equinox values for any coordinates
#   Number of records
#
7004A | Abell and Zwicky Clusters of Galaxies (Abell+ 1974) $
zwicky.dat | Zwicky Clusters (Zwicky et al., 1961-68) $
RA | DE | SGLON | SGLAT | ClusRad | Pop $
h min | deg arcmin | deg | deg | deg | ct/deg2 $
A7 | A6 | F6.2 | F6.2 | F4.2 | I5 $
 |  |  |  |  |  $
1950.0 | 1950.0 |  |  |  |  $
Right Ascension (Eq: 1950.0) | Declination (Eq: 1950.0) | Supergalactic longitude, de Vaucouleur's system | Supergalactic latitude | Cluster radius: 0.09326 * Diam | Mean apparent population (galaxies/sq.deg) $
29 $
#
# Data starts after EOH below
#
EOH # End Of Header
01 01.0 | +26 48 | 323.14 |   5.20 | 0.08 |  2665 $
01 12.8 | +25 05 | 322.20 |   2.19 | 0.07 |  1944 $
01 15.1 | +10 47 | 308.62 |  -2.38 | 0.07 |  3211 $
01 19.8 | +10 39 | 308.83 |  -3.53 | 0.10 |  1723 $
01 23.5 | +10 21 | 308.81 |  -4.49 | 0.13 |  1960 $
01 24.5 | +31 47 | 329.35 |   1.66 | 0.11 |  1905 $
01 29.5 | +27 31 | 325.62 |  -0.67 | 0.08 |  1807 $
01 29.7 | +31 27 | 329.37 |   0.51 | 0.05 |  5123 $
01 30.6 | +32 15 | 330.20 |   0.57 | 0.08 |  2078 $
01 38.1 | +18 39 | 317.81 |  -5.34 | 0.09 |  2708 $
01 38.6 | +27 40 | 326.41 |  -2.54 | 0.09 |  2451 $
01 40.9 | +25 51 | 324.86 |  -3.62 | 0.06 |  4269 $
01 45.0 | +19 48 | 319.44 |  -6.51 | 0.06 |  4574 $
01 47.9 | +20 09 | 320.00 |  -7.04 | 0.07 |  2344 $
01 48.9 | +18 55 | 318.91 |  -7.67 | 0.06 |  3557 $
01 49.8 | +29 25 | 328.89 |  -4.25 | 0.07 |  4107 $
01 59.1 | +18 12 | 319.06 | -10.19 | 0.10 |  2117 $
02 02.5 | +17 41 | 318.85 | -11.13 | 0.10 |  1602 $
02 09.1 | +23 17 | 324.74 | -10.52 | 0.12 |  1515 $
02 13.9 | +17 34 | 319.74 | -13.71 | 0.10 |  1784 $
02 20.0 | +12 55 | 315.81 | -16.76 | 0.07 |  2573 $
02 25.7 | +17 06 | 320.40 | -16.49 | 0.05 |  6587 $
02 27.5 | +18 53 | 322.28 | -16.19 | 0.08 |  2936 $
02 33.5 | +18 33 | 322.55 | -17.62 | 0.07 |  2763 $
02 37.2 | +25 14 | 329.25 | -15.57 | 0.05 |  6587 $
02 39.3 | +25 50 | 330.02 | -15.72 | 0.09 |  2525 $
02 39.4 | +14 02 | 318.77 | -20.72 | 0.14 |  1951 $
02 39.9 | +21 47 | 326.29 | -17.63 | 0.07 |  4406 $
02 42.2 | +33 23 | 337.23 | -12.77 | 0.07 |  2573 $

Near future enhancements: