In Section 4.1.2 Access via Datalink URL from tutorial 02c_Image_Queries_with_TAP, I’m encountering the following error when trying to obtain the new link. I didn’t make any changes to the tutorial code, and it seems that the resource is not votable.
I was also wondering: what are the restrictions on which images can be accessed this way? Are there specific conditions under which an image is not considered votable?
dl_results = DatalinkResults.from_result_url(results_0['access_url'],
session=auth_session)
---------------------------------------------------------------------------
E19 Traceback (most recent call last)
Cell In[106], line 1
----> 1 dl_results = DatalinkResults.from_result_url(results_0['access_url'],
2 session=auth_session)
File /opt/lsst/software/stack/conda/envs/lsst-scipipe-10.0.0/lib/python3.12/site-packages/pyvo/dal/adhoc.py:838, in DatalinkResults.from_result_url(cls, result_url, session, original_row)
836 @classmethod
837 def from_result_url(cls, result_url, *, session=None, original_row=None):
--> 838 res = super().from_result_url(result_url, session=session)
839 res.original_row = original_row
840 return res
File /opt/lsst/software/stack/conda/envs/lsst-scipipe-10.0.0/lib/python3.12/site-packages/pyvo/dal/query.py:302, in DALResults.from_result_url(cls, result_url, session)
295 """
296 Create a result object from a url.
297
298 Uses the optional session to make the request.
299 """
300 session = use_session(session)
301 return cls(
--> 302 votableparse(cls._from_result_url(result_url, session).read),
303 url=result_url,
304 session=session)
File /opt/lsst/software/stack/conda/envs/lsst-scipipe-10.0.0/lib/python3.12/site-packages/astropy/io/votable/table.py:164, in parse(source, columns, invalid, verify, chunk_size, table_number, table_id, filename, unit_format, datatype_mapping, _debug_python_based_parser)
159 config["filename"] = source
161 with iterparser.get_xml_iterator(
162 source, _debug_python_based_parser=_debug_python_based_parser
163 ) as iterator:
--> 164 return tree.VOTableFile(config=config, pos=(1, 1)).parse(iterator, config)
File /opt/lsst/software/stack/conda/envs/lsst-scipipe-10.0.0/lib/python3.12/site-packages/astropy/io/votable/tree.py:4339, in VOTableFile.parse(self, iterator, config)
4337 break
4338 else:
-> 4339 vo_raise(E19, (), config, pos)
4340 config.update(self._get_version_checks())
4342 tag_mapping = {
4343 "PARAM": self._add_param,
4344 "RESOURCE": self._add_resource,
(...)
4350 "GROUP": self._add_group,
4351 }
File /opt/lsst/software/stack/conda/envs/lsst-scipipe-10.0.0/lib/python3.12/site-packages/astropy/io/votable/exceptions.py:124, in vo_raise(exception_class, args, config, pos)
122 if config is None:
123 config = {}
--> 124 raise exception_class(args, config, pos)
E19: None:1:0: E19: File does not appear to be a VOTABLE
Thank you!