Instruments Operation Science InformationMiscellaneous
| XRT | X-Ray Telescope - Fact sheet |
|---|
Optics
| X-Ray Optics | |
|---|---|
| Optic Design | Optimized Wolter-I grazing incidence optics |
| Spatial Resolution | Encircled energy of 68% within 2" @ 0.523keV |
| Focal Length | 2708mm |
| Micro-Roughness | 6Å (expected) |
| Aperture Size | > 340mm |
| Band Width | 2 - 200Å |
| Effective Area | > 1.0cm2 @ 0.523keV |
| Visible Light Optics | |
| Focal Length | 2708mm |
| Wavelength | 4305Å (G-band) |
| Field of View | >30' |
Camera performances
| CCD Type | back-illuminated CCD (E2V/CCD 42-40) |
| Pixel Format | 2048 × 2048 pixels |
| Pixel Size | 13.5 × 13.5 micron (corresponding to 1" × 1") |
| Field of View | 34' × 34' |
| Pixel Binning Mode | 1×1, 2×2, 4×4, and 8×8 |
| Dark Current | 0.1 e-/sec/pixel @ -65 C |
| CCD Temperature | passive cooling: < -43 C |
| CTE (Parallel) | >0.999996 |
| CTE (Serial) | >0.999999 (-93 C < T < -50 C) |
| QE (X-ray/EUV) | 0.93 @ 13Å, 0.61 @ 45Å, 0.46 @ 116Å, 0.56 @ 304Å |
| QE (Visible Light) | 0.44 @ 4000Å, 0.66 @ 5000Å |
| Full-well Capacity | 2.0 × 105 e- |
| System Gain | 57 e-/DN |
| System Noise | <30 e- |
| Output Data Resolution | 12 bit |
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(*) "SOLAR-B Soft X-ray Telescope (XRT) Flight CCD Camera System (XRT-S, XRT-E) Data Package"