Reimplement ESO querying functions to use TAP / ADQL (#2)

Author: juanmcloaiza

CHANGES.rst

@@ -28,6 +28,11 @@ linelists.cdms
 
 - Add a keyword to control writing of new species cache files.  This is needed to prevent tests from overwriting those files. [#3297]
 
+eso
+^^^
+
+- Use TAP backend instead of WDB. [#3141]
+
 heasarc
 ^^^^^^^
 

astroquery/eso/__init__.py

@@ -11,14 +11,14 @@ class Conf(_config.ConfigNamespace):
     """
 
     row_limit = _config.ConfigItem(
-        50,
+        1000,
         'Maximum number of rows returned (set to -1 for unlimited).')
     username = _config.ConfigItem(
         "",
         'Optional default username for ESO archive.')
-    query_instrument_url = _config.ConfigItem(
-        "http://archive.eso.org/wdb/wdb/eso",
-        'Root query URL for main and instrument queries.')
+    tap_url = _config.ConfigItem(
+        "https://archive.eso.org/tap_obs",
+        'URL for TAP queries.')
 
 
 conf = Conf()