Successful X-ray image of a high-energy source?

The value of X-ray and gamma-ray astronomy is based on the fact that some of the most energetic sources in the cosmos radiate at these wavelengths. Magnetic storms in stellar atmospheres (including storms on the Sun), exploding stars and their nebular remnants, the regions surrounding neutron stars and black holes, and the innermost regions associated with active galactic nuclei characterize the highest energy, shortest wavelength regime. What would you need to obtain a successful X-ray image of a high-energy source?

Select all that apply.

1    A telescope designed and built to be launched into space.
2    A cosmic source of high temperature.
3    A detector optimized for recording gamma rays.
4    Careful observations from the ground.
5    A single large mirror to collect and focus the X-ray emission.