The Eternal Emperor wants to throw a party the likes of which the galaxy has never seen. The billionth aniversaryanniversary of his reign is fast approaching (a mere hundred thousand years away!). He has brought the best celestial engineers in the galaxy together to create a stellar fireworks show for the party using supernovae and possibly other phenomena (the quasar show a few million years ago was a big hit). The show should be visible from the Emperor's palace on a rogue planet. Being basically immortal, the Emperor and his guests have little concern for time, so the party will take place across an entire year.
The following considerations apply:
- The supernovae should be as visible as possible from the planet surface without utterly overwhelming their visual sensors (thanks XKCD for the billion nukes against your eyes analogy).
- The supernovae should be visible from the rogue planet throughout the party year
- The Empire is a Kardashev III civilization with significant energy production, space travel, and manufacturing capabilities
- Due to high quality unobtanium shields, the planet itself suffers no negative effects (i.e. immolation)
- As few other systems as possible should be disrupted by the "fireworks"
- No citizens were harmed in the making of this product
- Standard Imperial cruisers have a top speed of .9c, though cargo craft and civilian transport travel significantly slower. Most military and trade spacecraft are crewed and piloted by AI to allow for accelerations that would kill most organics
- Most long distance travel is done through the Imperial Intragalactic Wormhole Network (IIWN). The IIWN is a network of artificially created wormholes that link frequently traveled and high population systems. Most occupied systems are accessible within a short distance (say, 100 light years) from the nearest IIWN station. Of course, there will always be colonists and terraformers living out in the "sticks", but they mind being far away from civilization. The stations are currently large enough to transport a small moon, but theoretically could be built larger if the need permits.
Question:
Given the level of technology above, is it feasible to artificially create supernovae on demand so that they are visible from a point in space during the same time period? How visible could they be from the planet's surface?