Free Access
Table 5
Uncertainty budget in the cross-calibration between SNLS and the HST via the observation of Landolt secondary standards.
| uM | gM | rM | iMa | zM | |
|
|
|||||
| Aperture corrections | ± 0.0045 | ± 0.0023 | ± 0.0014 | <0.001 | ± 0.0036 |
| Flat-field error | ± 0.0012 | <0.001 | <0.001 | <0.001 | <0.001 |
| Landolt uniformity | ± 0.0040 | ± 0.0020 | ± 0.0020 | ± 0.0020 | ± 0.0040 |
| Shutter precision | ± 0.0015 | ± 0.0015 | ± 0.0015 | ± 0.0015 | ± 0.0015 |
| Background residuals | ± 0.0010 | ± 0.0010 | ± 0.0010 | ± 0.0010 | ± 0.0010 |
| BD +17 4708 landolt measurements | ± 0.0034 | ± 0.0027 | ± 0.0028 | ± 0.0028 | ± 0.0030 |
| Landolt to MegaCam transformation | ± 0.0228 | ± 0.0023 | ± 0.0043 | ± 0.0026 | ± 0.0178 |
|
|
|||||
| Total | ± 0.0239 | ± 0.0050 | ± 0.0060 | ± 0.0047 | ± 0.0189 |
Notes.
(a)
The i2M band can be calibrated relatively to iM with a precision of 2 mmag (cf. Sect. 5.1).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.