The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.

TTM/COMIS is a wide-angle camera that uses a coded aperture mask to
determine source location. It covers the energy range 2-30 keV with a 7.8 deg
x 7.8 deg field of view FWHM. The geometric area is 655 sq-cm. It can
achieve an angular resolution of 2 arcminutes and a time resolution of 1 s.
The Galactic center region was imaged withthe TTM demonstrating the efficiency of
coded mask telescopes observations in hard X-rays.

HEXE, or High Energy X-ray Experiment, employs a phoswich of sodium iodide
and cesium iodide. It covers the energy range 15-200 keV with a 1.6 deg x
1.6 deg field of view FWHM. Each of the 4 identical detectors has a geometric area of
200 sq-cm. The maximum time resolution is 0.3-25 ms.

GSPC, also called Sirene 2, is a gas scintillation proportional counter. It
covers the energy range 2-100 keV with a 3 deg x 3 deg field of view
FWHM. The detector geometric area is 300 sq-cm. The instrument has a maximum
time resolution of 1.25-2.5 ms.

Pulsar X-1 consists of 4 phoswich detectors which covers the energy range
50-800 keV with a 3 deg x 3 deg field of view FWHM. Each of the 4 identical
detectors has 314 sq-cm geometric area. The maximum time resolution is 10 s.

The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.