To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.
The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.
Proton 1 & Proton 2
Mission Overview
Proton 1 was launched 16 July 1965 by the USSR into an orbit with apogee 589 km, perigee 183 km, and inclination 63.4 degrees. The orbital period was 92.25 minutes. The satellite weighed 12,200 kg. It was cylindrical in shape with convex ends. The experimental payload included instruments for monitoring cosmic rays with energies up to 1 X 1014 eV, determining the intensity and energy spectrum of galactic electrons, and measuring the intensity and energy spectrum of cosmic gamma-rays over 50 MeV. The satellite reentered the Earth's atmosphere on 11 October 1965.
Proton 2, physically identical to Proton 1, was launched on 2 November 1965. Its orbital parameters were: apogee 637 km, perigee 191 km, inclination 63.5 degrees. The orbital period was 92.6 minutes. It carried the same payload as Proton 1, again with the primary interest being ultra-high energy cosmic particles. It decayed on 6 February 1966.