Loading LoTSS skymodel fails

[henedler]

Hi, I really like the feature of querying LoTSS to retrieve a skymodel, it will also be handy e.g. as initial model for LBA calibration. However, it does not properly work with the current master. The first time I execute the lsmtool.load('LoTSS',...) function, it successfully returns a skymodel object, although while also raising the error Cannot write to ‘/tmp/tmpk8el9dbw’ (Success).

The second time I execute the function, I get an error, see the logs below. This might be connected to the way the LoTSS query is stored in a tempfile? Loading a skymodel from GSM or WENSS is successful.

log.txt

[henedler]

Looking a bit more into this, I think the cause is actually that the LoTSS queries become larger than the size of /tmp/ in our containers - this then somehow kills the LoTSS VOServer. One way would be to just increase the size of /tmp/ in our environment, but I was thinking that it might be a more robust solution to store the temporary files not in /tmp/, but in the current working directory - there we are guaranteed to have enough space for this.

This would only require a small change in this line.
We could add the dir argument to the creation of the temp file: tempdir.NamedTemporaryFile(dir=os.getcwd())

[darafferty]

I made an MR for this here: https://git.astron.nl/RD/LSMTool/-/merge_requests/79