PFSS_Tutorial problem

[SolarFlandez]

Dear,
I am following this tutorial, and specifically the following section:

####################################################################################

Load in PSP Spice Kernels (download happens automatically)

kernels = astrospice.registry.get_kernels('psp','recon')

Generate a list of timestamps to generate the spacecraft positions at

timestamps = [datetime.datetime(2021,3,1)+datetime.timedelta(hours=d)
for d in range(60*24)
]

Create the coordinates. We need the spice string "SOLAR PROBE PLUS"

This produces

psp_coords_inertial = astrospice.generate_coords('SOLAR PROBE PLUS',timestamps)

Transform to Heliographic Carrington, i.e. the frame that co-rotates with the Sun.

psp_coords_carr = psp_coords_inertial.transform_to(
sunpy.coordinates.HeliographicCarrington(observer="self")
)
#####################################################################################

and it shows the following error message:

---

HTTPError Traceback (most recent call last)
Cell In[37], line 2
1 # Load in PSP Spice Kernels (download happens automatically)
----> 2 kernels = astrospice.registry.get_kernels('psp','recon')
4 # Generate a list of timestamps to generate the spacecraft positions at
5 timestamps = [datetime.datetime(2021,3,1)+datetime.timedelta(hours=d)
6 for d in range(60*24)
7 ]

File ~/.local/lib/python3.10/site-packages/astrospice/net/reg.py:117, in KernelRegistry.get_kernels(self, body, type, version)
114 if type not in types:
115 raise ValueError(f'{type} is not one of the known kernel types '
116 f'for {body}: {types}')
--> 117 return self._kernels[body][type].get_kernels(version=version)

File ~/.local/lib/python3.10/site-packages/astrospice/net/reg.py:207, in RemoteKernelsBase.get_kernels(self, version)
184 def get_kernels(self, *, version=None):
185 """
186 Get a set of kernels. Any kernels not present locally will be
187 downloaded.
(...)
205 timerange.
206 """
--> 207 kernels = self.get_remote_kernels()
208 if version is not None:
209 kernels = [k for k in kernels if k.version == version]

File ~/.local/lib/python3.10/site-packages/astrospice/net/sources/psp.py:71, in PSPRecon.get_remote_kernels(self)
65 def get_remote_kernels(self):
66 """
67 Returns
68 -------
69 list[RemoteKernel]
70 """
---> 71 page = urlopen('https://sppgway.jhuapl.edu/recon_ephem')
72 soup = BeautifulSoup(page, 'html.parser')
74 kernel_urls = []

File /usr/lib/python3.10/urllib/request.py:216, in urlopen(url, data, timeout, cafile, capath, cadefault, context)
214 else:
215 opener = _opener
--> 216 return opener.open(url, data, timeout)

File /usr/lib/python3.10/urllib/request.py:525, in OpenerDirector.open(self, fullurl, data, timeout)
523 for processor in self.process_response.get(protocol, []):
524 meth = getattr(processor, meth_name)
--> 525 response = meth(req, response)
527 return response

File /usr/lib/python3.10/urllib/request.py:634, in HTTPErrorProcessor.http_response(self, request, response)
631 # According to RFC 2616, "2xx" code indicates that the client's
632 # request was successfully received, understood, and accepted.
633 if not (200 <= code < 300):
--> 634 response = self.parent.error(
635 'http', request, response, code, msg, hdrs)
637 return response

File /usr/lib/python3.10/urllib/request.py:557, in OpenerDirector.error(self, proto, *args)
555 http_err = 0
556 args = (dict, proto, meth_name) + args
--> 557 result = self._call_chain(*args)
558 if result:
559 return result

File /usr/lib/python3.10/urllib/request.py:496, in OpenerDirector._call_chain(self, chain, kind, meth_name, *args)
494 for handler in handlers:
495 func = getattr(handler, meth_name)
--> 496 result = func(*args)
497 if result is not None:
498 return result

File /usr/lib/python3.10/urllib/request.py:749, in HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)
746 fp.read()
747 fp.close()
--> 749 return self.parent.open(new, timeout=req.timeout)

File /usr/lib/python3.10/urllib/request.py:525, in OpenerDirector.open(self, fullurl, data, timeout)
523 for processor in self.process_response.get(protocol, []):
524 meth = getattr(processor, meth_name)
--> 525 response = meth(req, response)
527 return response

File /usr/lib/python3.10/urllib/request.py:634, in HTTPErrorProcessor.http_response(self, request, response)
631 # According to RFC 2616, "2xx" code indicates that the client's
632 # request was successfully received, understood, and accepted.
633 if not (200 <= code < 300):
--> 634 response = self.parent.error(
635 'http', request, response, code, msg, hdrs)
637 return response

File /usr/lib/python3.10/urllib/request.py:563, in OpenerDirector.error(self, proto, *args)
561 if http_err:
562 args = (dict, 'default', 'http_error_default') + orig_args
--> 563 return self._call_chain(*args)

File /usr/lib/python3.10/urllib/request.py:496, in OpenerDirector._call_chain(self, chain, kind, meth_name, *args)
494 for handler in handlers:
495 func = getattr(handler, meth_name)
--> 496 result = func(*args)
497 if result is not None:
498 return result

File /usr/lib/python3.10/urllib/request.py:643, in HTTPDefaultErrorHandler.http_error_default(self, req, fp, code, msg, hdrs)
642 def http_error_default(self, req, fp, code, msg, hdrs):
--> 643 raise HTTPError(req.full_url, code, msg, hdrs, fp)

HTTPError: HTTP Error 404: Not Found

######################################################################################

It means that Astrospice cannot find the webpage from which it is trying to download the ephemeris kernels for PSP (Parker Solar Probe).

this url: https://sppgway.jhuapl.edu/recon_ephem , It returns a 404, which indicates that it no longer exists or has been moved.

So, Do you have de correct url or a new method for this code?

Best regards,

Eduardo.