Secondly Compton Scattering detectors, coded mask imagers and spark chambers at higher energies give pretty good sky positions for gamma-ray sources – it is not as poor as the "right quarter of the sky" based on Earth occultation of sources…..although interesting some scientists extracted additional observational data from the CGRO BATSE instrument using precisely this technique.

Finally you constantly gave the impression that gamma-rays are caused by accelerated particles. While this is true at higher energies, there is a whole range of observations from nuclear decay transitions and electron-positron annihilation at 511 keV etc. in the lower part of the regime. These decay lines give us a great deal of diagnostic information on, for example, the composition of stellar remnants.

While there was nothing per se with what you did say it did not do full justice to the field of gamma-ray astronomy.