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Optics | Wolter Type-I | |||||||||
Mirror coating | Iridium (330 Å, nominal) | |||||||||
Mirror outer diameters (1, 3, 4, 6) | 1.23, 0.99, 0.87, 0.65 m | |||||||||
Mirror lengths (Pn or Hn) | 84 cm | |||||||||
Total length (pre- to post-collimator) | 276 cm | |||||||||
Unobscured clear aperture | 1145 cm2 | |||||||||
Mass | 1484 kg | |||||||||
Focal length | 10.070 ±0.003 m | |||||||||
Plate scale | 48.82 ±0.02 μm arcsec−1 | |||||||||
Exit cone angles from each hyperboloid: | ||||||||||
θc (1, 3, 4, 6) | 3.42°, 2.75°, 2.42°, 1.80° | |||||||||
θd (1, 3, 4, 6) | 3.50°, 2.82°, 2.49°, 1.90° | |||||||||
f-ratios (1, 3, 4, 6) | 8.4, 10.4, 11.8, 15.7 | |||||||||
PSF FWHM (with detector) | < 0.5 arcsec | |||||||||
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Ghost-free field of view | 30 arcmin diameter |
X-ray: | Encircled Energy Fraction | ||
E | λ | Diameter | |
keV | Å | 1 arcsec | 10 arcsec |
0.1085 | 114.2712 | 0.7954 | 0.9979 |
0.1833 | 67.6401 | 0.7937 | 0.9955 |
0.2770 | 44.7597 | 0.7906 | 0.9929 |
0.5230 | 23.7064 | 0.7817 | 0.9871 |
0.9297 | 13.3359 | 0.7650 | 0.9780 |
1.4967 | 8.2838 | 0.7436 | 0.9739 |
2.0424 | 6.0706 | 0.7261 | 0.9674 |
2.9843 | 4.1545 | 0.6960 | 0.9560 |
3.4440 | 3.6000 | 0.6808 | 0.9479 |
4.5108 | 2.7486 | 0.6510 | 0.9319 |
5.4147 | 2.2898 | 0.6426 | 0.9300 |
6.4038 | 1.9361 | 0.6365 | 0.9344 |
8.0478 | 1.5406 | 0.5457 | 0.9185 |
8.6389 | 1.4352 | 0.5256 | 0.9151 |
10.0000 | 1.2398 | 0.4971 | 0.8954 |
Detector | SIM-Z | Optical Axis | Permanent Default | Error Box | Error Box | Chip | ||
(mm) | (pixel) | Aimpoint (pixel) | without | with | ||||
ChipX(σ) | ChipY(σ) | ChipX | ChipY | dither (pixel) | dither (pixel) | |||
ACIS-I | −233.587 | 957.7(4.5) | 979.1(4.5) | 970 | 975 | 12′′×16′′ | 28′′×32′′ | I3 |
(24.4×32.5) | (56.9×65.0) | |||||||
ACIS-S | −190.143 | 232.7(4.5) | 505.7(4.5) | 210 | 520 | 16′′×12′′ | 32′′×28′′ | S3 |
(32.5×24.4) | (65.0×56.9) | |||||||
HRC-I | 126.983 | 7614.3(22.0) | 7775.3(9.1) | 7590 | 7745 | 16′′×12′′ | 56′′×52′′ | |
(121.4×91.1) | (425.0×394.7) | |||||||
SIM [Y,Z] | SIM [Y,Z] | |||||||
HRC-S | 250.466 | 2150.9(16.9) | 8918.4(16.9) | 2195 | 8915 | 12′′×16′′ | 52′′×56′′ | S2 |
(91.1×121.4) | (394.7×425.0) | |||||||
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