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<p>Hi,</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Since Version 3.X I'm not able to perform transformations on planetary (non-Earth) data (from e.g. Mars or Mercury, example dataset: <a class="moz-txt-link-freetext" href="https://maps.planet.fu-berlin.de/mex4/h1104_0000.ihs.53.tif">https://maps.planet.fu-berlin.de/mex4/h1104_0000.ihs.53.tif</a>). The error message is:
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<font face="monospace">No transform is available between <span
style=" font-style:italic;">SINUSOIDAL MARS</span> and <span
style=" font-style:italic;">Custom CRS:
GEOGCRS["unknown",DATUM["unknown",ELLIPSOID["WGS 8…</span>.</font><br>
<font face="monospace">proj_create_operations: Source and target
ellipsoid do not belong to the same celestial body
</font><br>
<font face="monospace">No transform available between SINUSOIDAL
MARS and EPSG:4326</font>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">The consequence is that transformations to lat/lon are not possible any more. With the older QGis there was no problem like this. My suspect is the "new" Proj6 database layout, but the above error messages also point to the fact there there is some EPSG:4326 projection hard-coded into Qgis.</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Is anybody successfully using Qgis with non-Earth data and proper transformations?</p>
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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Thanks for any advise...</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Sebastian
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