Table 2.
Parameters used in SExtractor in the different lists.
List | Thresh. (σsky) | Min. area (pix) | Back size (pix) |
---|---|---|---|
Small | 1 | 10 | 100 × 100 |
Large | 50 | 10 000 | 21 000 × 21 000 |
LSB | 5 | 25 | 500 × 500 |
Notes. The columns in the table correspond to the name of the list (List), detection threshold (Thresh.) in units of background noise standard deviations (1σ corresponds typically to μr′≈ 26 mag arcsec−2), number of connected pixels above threshold to count as detection (Min. area), and the background model grid size (Back size). In the “LSB” list, an additional 9 × 9-pixel median filtering was applied to the images before the detection, so the 5σ threshold corresponds to 0.55σ in the non-filtered image.
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.