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feat: add DES Y band (u band deferred pending sourcing decision) #137

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Merged
aboucaud merged 1 commit into from
Oct 1, 2026
Merged

feat: add DES Y band (u band deferred pending sourcing decision) #137

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9 changes: 8 additions & 1 deletion surveycodex/data/DES.yaml
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Expand Up @@ -34,6 +34,13 @@ filters:
zeropoint: 26.58
psf_fwhm: 0.84
effective_wavelength: 919.646
Y:
name: "Y"
sky_brightness: 17.96
full_exposure_time: 450
zeropoint: 25.56
psf_fwhm: 0.90
effective_wavelength: 989.297
references:
pixel_scale:
link: "http://www.ctio.noirlab.edu/noao/content/DECam-What"
Expand All @@ -55,7 +62,7 @@ references:
comment: "(v3) See table 1"
full_exposure_time:
link: "https://arxiv.org/abs/1801.03181"
comment: "(v3) See section 2.2 page 5. Coadds of 10 x 90s exposures"
comment: "(v3) See section 2.2 page 5. Coadds of 10 x 90s exposures for g/r/i/z. Y-band used 10 x 45s exposures (450s total) during Y1-Y3 (the data release covered by this paper); footnote 9 notes Y exposure time was raised to 90s from Y4 onward while keeping the same 450s cumulative target -- so the 900s value used for g/r/i/z is not applicable to Y"
zeropoint:
link: "https://speclite.readthedocs.io/en/latest/filters.html#decam-2014-filters"
comment: "computed with speclite – see scripts/check_zeropoints.py"
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