AO-2 Calibration Target Candidates
| Target | Target position | Exposure (ks) | Setting | Purpose | Notes | ||
|---|---|---|---|---|---|---|---|
| RA | Dec | Resolve | Xtend | ||||
| Crab_NEoffset | 83.6468 | 22.0272 | 8 | OPEN | FULL WINDOW+BURST (Crab mode) | Resolve timing | |
| Crab_NWoffset | 83.6194 | 22.0272 | 8 | OPEN | FULL WINDOW+BURST (Crab mode) | Resolve timing | |
| Crab_SEoffset | 83.6468 | 22.0018 | 8 | OPEN | FULL WINDOW+BURST (Crab mode) | Resolve timing | |
| Crab_SWoffset | 83.6194 | 22.0018 | 8 | OPEN | FULL WINDOW+BURST (Crab mode) | Resolve timing | |
| 3C 273 | 187.2779 | 2.0524 | 30 | OPEN | 1/8 WINDOW | both effective area | |
| 1E0102.2-7219 | 16.0089 | -72.0312 | 30 | MXS+Fe55 | FULL WINDOW 1/8 WINDOW | Xtend contamination and energy | Two observations with different Xtend modes in each of the spring and fall semesters |
| Perseus Cluster | 49.9507 | 41.5117 | 40 | OPEN | FULL WINDOW 1/8 WINDOW | Xtend energy | Two observations with different Xtend modes in each of the spring and fall semesters |
| Perseus_CCD1 | 50.2821 | 41.5317 | 40 | OPEN | FULL WINDOW | Xtend energy | Perseus core on the CCD1 chip |
| Perseus_CCD3 | 50.2644 | 41.7027 | 40 | OPEN | FULL WINDOW | Xtend energy | Perseus core on the CCD3 chip |
| Perseus_CCD4 | 49.8251 | 41.6751 | 40 | OPEN | FULL WINDOW | Xtend energy | Perseus core on the CCD4 chip |
| Cygnus Loop | 312.7049 | 31.8900 | 30 | MXS+Fe55 | FULL WINDOW | Xtend energy | Observation in the spring semester |
| Cygnus Loop | 312.9002 | 32.0641 | 30 | MXS+Fe55 | FULL WINDOW | Xtend energy | Observation in the fall semester |
Note:
Coordinates values are rounded to the forth decimal place.
Target position may be changed at each observation.
For current observations status, please check OBSLOG.