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These pages track the movement of Chandra's Science Instrument Module (SIM). Motion between detectors and focus positions is plotted. Data is processed using full-frame raw telemetry, so the temporal resolution is about 32s. Moves between ACIS-I and ACIS-S are usually shorter than 32s, so times shown below for these moves are understated. Processing parameters/assumptions include a maximum move time of 500s and minimum time "settled"at a particular detector of 1500s.
(Click a plot to enlarge it)
| TSC Position (z-axis) | FA position (x-axis) | Max Pulse Width Modulation | |
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| ACIS-S |
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| HRC-I |
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| HRC-S |
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| ACIS I | 89000 | 94103 |
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| ACIS S | 71420 | 76823 |
| HRC I | -51705 | -49306 |
| HRC S | -100800 | -98400 |
(Click a plot to enlarge it)
| ACIS-I |
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| ACIS-S |
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| HRC-I |
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| HRC-S |
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(Click a plot to enlarge it)
| ACIS-I |
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| ACIS-S |
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| HRC-I |
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| From | To | # Obs | Time (sec)/ Step | Average Time |
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| ACIS-I | ACIS-S | 1054 | 0.00208 | 35.0+/-13.4 |
| ACIS-I | HRC-I | 85 | 0.00135 | 191.9+/-18.4 |
| ACIS-I | HRC-S | 597 | 0.00136 | 260.5+/-18.0 |
| ACIS-S | ACIS-I | 992 | 0.00207 | 34.5+/-11.5 |
| ACIS-S | HRC-I | 645 | 0.00127 | 158.8+/-21.5 |
| ACIS-S | HRC-S | 2274 | 0.00132 | 228.8+/-22.3 |
| HRC-I | ACIS-I | 98 | 0.00134 | 188.8+/-14.7 |
| HRC-I | ACIS-S | 330 | 0.00129 | 161.4+/-13.6 |
| HRC-I | HRC-S | 417 | 0.00117 | 55.3+/-24.7 |
| HRC-S | ACIS-I | 709 | 0.00131 | 258.7+/-12.9 |
| HRC-S | ACIS-S | 2390 | 0.00132 | 229.2+/-18.9 |
| HRC-S | HRC-I | 109 | 0.00160 | 72.5+/-25.3 |
If you have any quesitons, plase contact: swolk@cfa.harvard.edu