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Shot looking straight up into the thrust chamber.

Picture 2 of 2.

The edges of the picture show where the nozzle extension bolts onto the engine proper.

The injector is in really nice shape; this is one of the few injectors I've seen that is still brightly copper-colored.

The change in the tubes slightly less than one injector diameter from the center is where the regenerative cooling tubes comprising the thrust chamber bifurcate, or split in two.