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ROSAT : The Roentgen Satellite
https://heasarc.gsfc.nasa.gov/docs/rosat/rosat.html
Lifetime : 1 June 1990 - 12 February 1999
Energy Range : X-ray 0.1 - 2.5 keV , EUV 62-206 eV
Special Feature : All sky-survey in the soft X-ray band
Payload :
An X-ray telescope used in conjunction with one of the following instruments (0.1-2.5 keV)
Position Sensitive Proportional Counter
(PSPC) 2 units : detector B, used for the pointed phase, & detector C ,used for the survey
FOV 2 ° diameter eff area 240 cm2 at 1 keV
energy resolution of deltaE/E=0.43 (E/0.93)-0.5
High Resolution Imager (HRI)
FOV 38 ' square ; eff area 80 cm2 at 1 keV
~ 2 arcsec spatial resolution (FWHM)
A Wide Field Camera with its own mirror system
(62-206 eV) FOV 5 ° diameter
Science Highlights: X-ray all-sky survey catalog, more than 150000 objects XUV all-sky survey catalog (479 objects) Source catalogs from the pointed phase (PSPC and HRI) containing ~ 100000 serendipitous sources Detailed morphology of supernova remnants and clusters of galaxies. Detection of shadowing of diffuse X-ray emission by molecular clouds. Detection (Finally!) of pulsations from Geminga. Detection of isolated neutron stars. Discovery of X-ray emission from comets. Observation of X-ray emission from the collision of Comet Shoemaker-Levy with Jupiter.
Archive : Catalogs, Spectra, Lightcurves, Images and Raw data
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Chandra X-ray Observatory
https://heasarc.gsfc.nasa.gov/docs/chandra/chandra.html
Lifetime :23 July 1999 - (nominal 5 year mission) AXAF Charged Coupled Imaging Spectrometer ACIS-I. One 4-chip imaging array, all FI. FOV 16´ X 16´ ACIS-S. One 6-chip spectroscopic array, 4 FI and 2 BI FOV 8´ X 48´. To be used primarily with the grating. High Resolution Camera (HRC; 0.1-10 keV) HRC-I One 90mm square detector optimized for imaging. FOV ~30´ X 30´, eff. area 225 cm2 @ 1 keV, ~ 0.5 arcsec spatial resolution HRC-S One 20 X 300 mm rectangular detector optimized for use with the LETG transmission gratings experiment. FOV 7´ X 97´ High Energy Transmission Grating + ACIS-S (HETG; 0.5-10 keV) Low Energy Transmission Grating + HRC-S (LETG; 0.08-6 keV)
Energy Range : 0.1-10 keV
Special Features : 64 Hours highly-eccentric Earth orbit.
Spatial resolution < 1 arcsec
Payload :
A single Wolter Type 1 grazing incidence iridium-coated imaging telescope with a ghost free FOV ~ 30´ diameter and an effective area of 800 and 400 cm2 @ 0.25 and 5 keV respectively.
Four detectors could be inserted, one at a time, into the focal plane. Two of these were designed to be used primarily with the gratings.
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(ACIS; 0.2-10 keV) 2 CCD arrays for a total of 10 chips. 8 chips are Front Illuminated (FI) and 2 are Back Illuminated (BI).
FI: Eff area 340 cm2 @ 1 keV, E/dE = 20-50 @ 1 and 6 keV
BI: Eff area 340 cm2 @ 1 keV, E/dE = 9-35 @ 1 and 6 keV
2 micro-channel plate detectors.
spectral resolving power (E/dE) 60-1000.
spectral resolving power (E/dE) 30-2000.
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