Hi Jerry,
Indeed the ability to sample multiple TPAS coordinates through the FROM PLANETARIUM interface is not supported.
In theory, one could sample the same object multiple times as its apparent position changed due to Earth rotation and this would make for valid TPAS data.
We rolled a one-off custom special version of the firmware for a solar observatory research institution in Hong Kong a few years back that provided for that.
This particular observatory just operated during the day and just looked at the Sun, so that was the only object they could sample.
However, in the design of TPAS we had a couple of major requirements. One was that it be able to help provide improved pointing via a pointing model and the second
was that it could be easily operated via an interface using just one thumb.
When the user is sampling an object, we made the design decision that should they re-sample the same object it was most likely because they weren't entirely happy
with the object being centred or possibly because they had originally misidentified it. This behaviour was also consistent with that of MODE ALIGN STAR and MODE ALIGN.
If you align on an object you already had aligned on, it simply updated that alignment point rather than create a second one.
So we purposely designed the behaviour to be that the system would only hold a single sample associated with a single unique internally referenced name.
By doing that we also thought it made the REVIEW DATA menu easier to use, You could see the name of the object you had sampled and if there was only one instance of it, there
would be no ambiguity as to which entry you might want to keep and which you might have wanted to delete.
Since the FROM PLANETARIUM pseudo catalog entry only provides a single internal reference (that is it is the "FROM PLANETARIUM" object) with no name,
the behavior is that when a new set of coordinates are sent to it, it still internally is regarded as the same object as far as TPAS is concerned.
So that provides the historical design decision background as to why the ability to use the FROM PLANETARIUM catalog entry for sampling multiple TPAS objects is not supported.
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