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LEGUS Observations
HST Primary Observations
The primary observations consist of fifty local galaxies that are imaged with WFC3 using 5 filters
(WFC3/F275W, F336W, F438W, F555W, F814W). Post-flash was applied to observations performed using filters F275W, F336W, and F438W.
Images in all 5 filters will be obtained for most of the pointings. Only those targets with archival HST/ACS data
will only be imaged in fewer filters. For a subset of the galaxies,
small (2-4 pointings) mosaics will be obtained. There are a total of 63 primary pointings.
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HST Parallel Observations
For each of the 63 pointings, parallel observations are being obtained in ACS/F435W, F814W and F606W
depending on the target.
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UV / optical comparison
The figure below shows a comparison of the UVIS LEGUS images
of NGC 6503.
Drag the slider
to show (left) the optical mosaic created using
filters F435W (blue), F555W (green), and
F658N (red) and (right) the UV counterpart created using
filters F275W (blue), F336W (green), and F435W (red).
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Footprints
The figure below shows, as an example,
the WFC3/UVIS and ACS/WFC footprints
of the LEGUS and archival HST data of the interactive galaxy pair
NGC5194 + NGC 5195 on a GALEX NUV background 800 pixels (20 arcmin) on each side .
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Red footprints correspond to ACS archival data.
The purple footprints represent the LEGUS WFC3/UVIS primary observations
and the blue footprints represent the parallel ACS/WFC LEGUS observations.
Click to enlarge the figures below. |
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