Fender Stratocaster w/ Fender Blues Junior vacuum tube amplifier.

A sixty second exposure in manual mode. Setup: the amp was on its side and the guitar was in a stand (neck vertical). The amp was placed edge-on to a floor lamp on a dimmer, so that the tubes and visible part of the amp were in shadow. The guitar was placed so that the headstock could be illuminated by the floor lamp.

Exposure: The floor lamp was dimmed to its lowest setting, the shutter was tripped, and then the dimmer was brought up to full brightness for about a second, then shut off. This allowed the tubes filaments to register brightly.

Photoshopping was limited to a bit of perspective correction, rotating the image on its side, and cloning out some hot pixels.