Schizo in 360 degrees or LSD?

Film photography in one slide frame of Salu bridge and TV tower at night with full moon. Not quite multiple exposures - at least in the traditional sense. So, how it was done?

- tripod with marked degrees of rotation;
- hand over the lens;
- stopping the shutter in open position;
- removing the hand from lens, exposing the frame for about 3 seconds, then covering the lens again;
- then rotating the camera by 10 degrees and removing hand...
- rinse and repeat until you have 360 degree exposure;
- close the shutter;
- cross-process.

Then cropping and your usual contrast and gamma control.

Total exposure: f/5.4 ~108". Done with Olympus OM-1 film camera with 50mm Zuiko prime lens. And old, sturdy soviet tripod. Film: Fujichrome Sensia 100.