COS Imaging Bright-Object Limits
| Spectral Type | PSA+MirrorA | PSA+MirrorB | BOA+MirrorA | BOA+MirrorB |
|---|---|---|---|---|
| O5 V | 19.2 | 16.3 | 13.5 | 10.7 |
| O7 V | 19.1 | 16.2 | 13.4 | 10.5 |
| O9 V | 19.0 | 16.0 | 13.3 | 10.4 |
| B0 V | 18.9 | 15.9 | 13.2 | 10.3 |
| B1 V | 18.7 | 15.6 | 12.9 | 10.0 |
| B3 V | 18.1 | 15.0 | 12.4 | 9.3 |
| B5 V | 17.6 | 14.5 | 11.9 | 8.9 |
| B8 V | 16.9 | 13.7 | 11.1 | 8.0 |
| A1 V | 15.8 | 12.6 | 10.1 | 6.9 |
| A3 V | 15.6 | 12.3 | 9.9 | 6.6 |
| A5 V | 15.3 | 12.0 | 9.6 | 6.2 |
| F0 V | 14.7 | 11.3 | 8.9 | 5.5 |
| F2 V | 14.5 | 11.0 | 8.6 | 5.2 |
| F5 V | 14.0 | 10.6 | 8.1 | 4.7 |
| F8 V | 13.7 | 10.3 | 7.8 | 4.4 |
| G2 V (Solar) | 13.0 | 9.6 | 7.1 | 3.7 |
| G8 V (Tau Ceti) | 12.6 | 9.1 | 6.6 | 3.2 |
| K2 V (Epsilon Eri) | 11.8 | 8.3 | 5.8 | 2.4 |
| KM III (Eta Ser) | 11.4 | 8.0 | 5.5 | 2.0 |
| KM III (Alpha Boo) | 9.6 | 6.1 | 3.6 | 0.2 |
| KM III (Gamma Aql) | 7.1 | 3.6 | 1.1 | -2.3 |
| KM III (HD 146051) | 6.2 | 2.7 | 0.2 | -3.3 |
| KM III (Alpha Cet) | 8.0 | 4.6 | 2.1 | -1.3 |
| KM III (HD 123023) | 8.7 | 5.2 | 2.7 | -0.7 |
| KM III (Beta Gru) | 8.9 | 5.5 | 3.0 | -0.4 |
| T~50000 Blackbody | 19.2 | 16.2 | 13.5 | 10.6 |
| Fλ~λ-1 | 16.8 | 13.6 | 11.0 | 7.9 |
| Flat limit point source flux | 15.8 | 12.6 | 10.1 | 6.9 |
| Flat limit surface brightness | 9.8 | 7.0 | 4.1 | 1.3 |