Table 9
Requirements and settings for deep VIRCAM with ultraVISTA and VIDEO on VISTA.
| Filter | texp (s) | Nexp | Njitter | 〈Ndither〉 (per pix) | 〈ttot〉 (s) |
|---|---|---|---|---|---|
| VIDEO | |||||
| Z | 50 | 1 | 10 | 1 | 500 |
| Y | 30 | 2 | 8 | 1 | 480 |
| J | 30 | 2 | 8 | 1 | 480 |
| H | 10 | 6 | 7 | 1 | 420 |
| KS | 10 | 6 | 7 | 2 | 840 |
| UltraVISTA | |||||
| Y | 60 | 2 | 30 | 1 | 3600 |
| J | 30 | 4 | 30 | 1 | 3600 |
| H | 10 | 6 | 30 | 1 | 1800 |
| KS | 10 | 6 | 30 | 1 | 1800 |
Notes. Observation settings for each paw-print (texp, Nexp, Njitter) were used to compute the average number of dithers per-pixel on-sky (〈Ndither〉) that are needed to reach at least VIKING depth. We then randomly sampled 〈Ndither〉 dithers per pixel on-sky to construct our VIKING-like data in these deep fields. Subsequent further degradation of the photometry (in catalogue space) is needed to reach equivalent VIKING depths.
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.