would be awesome if the DATE-OBS seconds would be logged up to the 6th decimal place (minimum). I know, off-the-shelf cameras don't support this accuracy, once there is a camera that support this, that would be awesome. Precise timestamps could be possible using digital I/O. Have a look f. i. here
Using Trigger and Digital I/Os
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Secondly, would be awesome if the altitude/height of the observer could be added to the keywords.