The Vampire Scholar is part of the main storyline quest in Western Skyrim’s Blackreach Caverns. Quest requires you to find missing Fennorian.

You find yourself in front of a locked dwarven door and need to finish this easy puzzle to continue. Note provided will give you the most important hint: you need to arrange the dwemer cubes so that they display which constellation is missing on pedestals below the cubes.

For an easy solution see image below:

Interact with the cubes until the front shows the pattern displayed in the screenshots. Once you do it as explained the door will unlock.