| Scientific Discipline: | 3lAstronomy, stellar structure and evolution | ||
|---|---|---|---|
| Primary targets: | 3lOpen clusters with solar type stars brighter than 10 | ||
| Photometric precision: | 3lBetter than 1 part per million for primary targets | ||
| Telescope: | 3l 80cm diameter, flat field 3 mirror system | ||
| Scientific instruments: | Imaging Photometer | UV FTS | UV Line Monitor |
| Detector: | CCD mosaic | Thinned UV CCDs | MCP-SPAN |
| Field of view: | 11 | 11 | 11 |
| Dimensions (cm): | = 80cm 250 (+ baffle) | 180 120 60 | 200 100 30 |
| Power (W): | 75 | 75 | 35 |
| Mass (kg): | 325 (inc. telescope) | 230 | 50 |
| Data rate (kb/s): | 10 | 9 | 9 |
| Duration of observations: | 3l3 years (consumable for 5 - 10 years) | ||
| Number of stars observed: | 3l > 20000 (core programme > 500) in 25 fields | ||
| Pointing requirements: | 3l 3 |