Dealing with the claim of extreme and unmanageable temperatures;

The Lunar Sourcebook cites the surface temp of the Moon as -233°C to 123°C. If you, Gardum, disagree with these extremes, please cite your source and tell us how you measured them.

There's only one heat source; the Sun. The temp of the surface, assuming an open location, not in a crater's shadow, or such, reaches its peak in the middle of the lunar day, and descends to its lowest point during lunar night.

Recognise that this is a cycle of 28 Earth days, so for any one point on the surface, 14 days of sunlight, 14 days of dark. Once the temp has reached its low during the night, it can ONLY start to heat up at lunar dawn, when the sunlight hits it. Lunar noon is seven days later, so the increase of temp of the surface over those seven days is (233 + 123 =) 356 degrees. That's a temp rise of (356/7 =) 50 degrees per day, or approx 2 degrees per hour.

Objects will vary, but this gives an approximation of how quickly something will heat up in open sunlight on the Moon.

Take a Hasselblad camera out on an EVA of 4 hours, and this would suggest that, if it had the same reflectivity as the lunar surface, it's outer casing would heat up by 8 degrees. In fact, it was designed to be more reflective, and hence it would accept less heat than this.