The Luminous Crafting Table is a block added by Astral Sorcery. It is the first tier of crafting altar and is used throughout the Exploration chapter of the Astral Tome.
The Table will gather Starlight when exposed to the sky. This amount increases as it approaches midnight and the higher up it is placed, with the maximum efficiency being when placed at a Y-level above 127.
Right-clicking it will open its UI where items can be placed, just like in a Crafting Table. When a valid recipe is created the output item appears on the right-hand side. However, the crafting output cannot be directly picked up; instead, the Table must be right-clicked with a Resonating Wand when enough Starlight is currently gathered in the Table, consuming the inputs and dropping the output above it after a few seconds.
This recipe does not work any longer. To get a luminous crafting table in newer editions, one must place a crafting table directly under a Collector Crystal and then dig up until it is open to the sky.
Astral Tome entry
Using a regular crafting table to interact with the Starlight emitted by the shrine crystal, which you have named "Collector Crystals" due to how they gather Starlight, seems to be inefficient. The table is only able to contain a small amount of Starlight from the crystal. Not only that, but the table must be very nearby the crystal or the collected Starlight rapidly bleeds out from it due to wood being inefficient for this purpose.
The Luminous Crafting Table solves both issues perfectly by being made of the purest marble. It is able to absorb and retain a much larger amount of Starlight than the crafting table. Also, it does not require a connection to a Collector Crystal to collect Starlight at all, as it has its own receptacle built within.
The Luminous Crafting Table is not without its drawbacks, though. First, it needs to be placed somewhere above the ground with an unobstructed view of the sky in order to collect Starlight. Its collection process also seems to be inefficient, even with the clearest of skies.
Placing the table higher in the sky allows it to collect more Starlight, with the atmospheric interference of Starlight seeming to disappear entirely at around twice the height of sea level. It also collects considerably more Starlight during the nighttime. The table's current Starlight reservoir is visible beneath its crafting grid.
In order to craft with the Luminous Crafting Table, the table must be right clicked with a Resonating Wand after the items for the recipe are placed in it. When the item is done crafting, the item will be ejected out of the table.
The amount of Starlight collected by the table varies heavily from position to position within the world, ranging from almost no Starlight at all, to filling or even exceeding the reservoir.