Synthetic photometry (simqso.sqphoto)¶
Reference/API¶
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class
simqso.sqphoto.
sdssPhotoUnc
(b)[source]¶ Bases:
object
In a given SDSS band “b”, provide the uncertainty for a given flux in nanomaggies (f_nmgy) based on the distribution of observing conditions.
–> Currently underestimates true scatter by using gaussians for the scatter, whereas the true distributions generally have long tails to higher values for sky, nEff, etc.
see http://classic.sdss.org/dr7/algorithms/fluxcal.html for details
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class
simqso.sqphoto.
empiricalPhotoUnc
[source]¶ Bases:
object
approximation only valid in sky-dominated regime
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class
simqso.sqphoto.
ukidssdxsPhotoUnc
(b)[source]¶ Bases:
simqso.sqphoto.empiricalPhotoUnc
as with Stripe82, not valid at bright magnitudes (m<~20)
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class
simqso.sqphoto.
sdssStripe82PhotoUnc
(b)[source]¶ Bases:
simqso.sqphoto.empiricalPhotoUnc
this fails at m<~18 when SDSS detections are no longer sky-dominated, but not really interested in bright objects on the Stripe… also, dominated by calibration uncertainty for bright objects anyway
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class
simqso.sqphoto.
cfhtlsWidePhotoUnc
(b)[source]¶ Bases:
simqso.sqphoto.empiricalPhotoUnc
as with Stripe82, not valid at bright magnitudes (m<~19)