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Browse for a csv-file on your computer and upload it. Format: title, ra, dec, epoch, search_radius, magnitude_limit, grid. Details and a sample is in the Help.
Important: if your csv-file contains 50 coordinates or more, we have seen MAST refusing to answer and cutting us off for some minutes. You will notice this by getting a Gateway timeout. We now will automatically add a 1 second delay if there are >= 50 queries. Please note, that even below 50 we can not grant it will work, because queries in crowded fields are expensive.