As there is no much to do while you have 24h/24h 100% cloud cover.... you go and test a few things... Astrometry, for example.

$ indiserver -v indi_simulator_ccd indi_simulator_telescope indi_simulator_guide indi_astrometry
Starts Kstars 3.0.0 (Osx), connect to indi server, then Align > Load&Slew (I select my h.jpg file) | Solver: remote
Options: -O --no-plots --no-verify --resort --downsample 2 -3 2.54167 -4 59.2583 -5 30

While trying to solve an image which I know is solvable, I get the following:

The interesting thing is that the image I used is a jpeg, and it is not corrupted.
If I use the ccdsolver.fits from the /tmp folder then yes it is corrupted.
$ cp /tmp/ccdsolver.fits .
$ jpegtopnm ccdsolver.fits > ccdsolver.ppm
jpegtopnm: WRITING PPM FILE
Corrupt JPEG data: premature end of data segment
Invalid JPEG file structure: two SOF markers





# dpkg -l | grep astrometry
ii astrometry.net 0.73+dfsg-1 armhf Astrometry plate solver
ii libastrometry0:armhf 0.73+dfsg-1 armhf Astrometry plate solver (shared lib)
ii libnova-0.16-0:armhf 0.16-2 armhf celestial mechanics, astrometry and astrodynamics library
ii python-astrometry 0.73+dfsg-1 armhf Astrometry plate solver (Python package)

Interesting, not sure what this is about

[2018-12-23T13:20:05.586 GMT INFO ][ org.kde.kstars.ekos.align] - "Starting remote solver..."
[2018-12-23T13:20:05.624 GMT INFO ][ org.kde.kstars.indi] - Astrometry : "[INFO] Astrometry solver is enabled. "
[2018-12-23T13:20:05.624 GMT DEBG ][ org.kde.kstars.indi] - < Astrometry >: < ASTROMETRY_RESULTS >
[2018-12-23T13:20:05.844 GMT INFO ][ org.kde.kstars.indi] - Astrometry : "[ERROR] Astrometry compression error: -3 "
[2018-12-23T13:20:27.478 GMT INFO ][ org.kde.kstars.ekos.align] - "Solver aborted after 22 seconds"

Even more interesting, I have on the server and on the Mac the same indexes files (index-4208.fits index-4214.fits).
Using the internal Astrometry within Kstars 3.0 (OSX), and with the following options: -O --no-plots --downsample 2
I can solve images when choosing "internal"

But If I pick "remote", the solver does not work at all. Nothing happens, just hit the time-out.

Hi,
Not on mac, but on windows using remote solving I have the same kind of issue. Kstars connected remotely on indi server running on a TinkerBoard - posted a question about that already.