mrgeorge / speclens

Simulate galaxy images and velocity maps for spectroscopic weak lensing
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assign velocity errors for each sampling position based on relative photon noise #13

Open mrgeorge opened 10 years ago

mrgeorge commented 10 years ago

Most examples currently set velocity errors (sigma) to a fixed value of 30 km/s. I think an array is allowed, but somewhere it should be possible to intelligently set the noise level as a function of position. Faint regions will have lower S/N that should scale something like sqrt(flux in fiber). Ultimately we'll want to scale this to the integration time.