High Energy Astronomy Observatory 1
| HEAO-1 | |
|---|---|
|
|
| Type: | X-ray telescope |
| Country: |
 United States
|
| Operator: | NASA |
| COSPAR-ID : | 1977-075A |
| Mission dates | |
| Dimensions: | 2720 kg |
| Begin: | August 12, 1977, 06:29 UTC |
| Starting place: | Cape Canaveral LC-36B |
| Launcher: | Atlas - Centaur SLV-3D |
| Flight duration: | 19 months |
| Status: | burned up on March 15, 1979 |
| Orbit data | |
| Rotation time : | 93.4 min |
| Orbit inclination : | 22.7 ° |
| Apogee height : | 447 km |
| Perigee height : | 429 km |
High Energy Astronomy Observatory 1 (HEAO-1) was the first in a series of three powerful X-ray telescopes from NASA in the late 1970s .
HEAO-1 was launched on August 12, 1977 with an Atlas Centaur rocket from Cape Canaveral and was in operation until January 9, 1979, in March 1979 it reentered the earth's atmosphere.
HEAO-1 was optimized for surveys of the entire sky. Four experiments (A1 to A4) were available for this purpose, with which an energy range from 0.2 keV to 10 MeV was covered. The spatial resolution of most instruments was relatively poor at 1–4 °.
With each of the HEAO-1 instruments, catalogs of X-ray sources were created, meaning a flow-limited catalog of X-ray sources at high galactic latitude (including mainly galaxies). The cosmic X-ray background in the hard X-ray range of 3–50 keV was measured. Changes in the brightness of objects such as X-ray binary stars and active galactic nuclei were also investigated.
Individual evidence
- ↑ HEAO in the Encyclopedia Astronautica , accessed on July 9, 2012 (English).
See also
Web links
- HEAO-1 site of NASA (English)
- HEAO-1 in the NSSDCA Master Catalog (English)