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.

Notes on Chandra spectral simulations.
Chandra ACIS information |
Chandra HETG information |
Chandra LETG information |
Notes on NICER spectral simulations.
Notes on NUSTAR spectral simulations.
Notes on Swift spectral simulations.
Swift BAT Information |
Swift XRT Information |
Swift UVOT Information |
Notes on XMM spectral simulations.
XMM EPIC MOS CCD |
XMM EPIC pn CCD |
Notes on Athena spectral simulations.
Athena X-IFU |
Notes on ASCA spectral simulations.
ASCA GIS |
ASCA SIS |
Notes on BeppoSAX spectral simulations.
BeppoSAX Information |
Notes on ROSAT spectral simulations.
ROSAT PSPC |
Notes on RXTE HEXTE spectral simulations.
RXTE HEXTE |
Notes on 5 PCU RXTE PCA spectral simulations.
Notes on 3 PCU RXTE PCA spectral simulations.
RXTE PCA (Layer 1 only with instr background) |
RXTE PCA (Layer 1 only with instr & cosmic background) |
RXTE PCA (Layers 2+3 with instr background) |
RXTE PCA (Layers 2+3 with instr & cosmic background) |
RXTE PCA (Layers 1+2+3 with instr background) |
RXTE PCA (Layers 1+2+3 with instr & cosmic background) |
Notes on Suzaku spectral simulations.
Suzaku HXD |
Suzaku XIS |