FgcmMakeLutTask

FgcmMakeLutTask computes a look-up table tracking atmosphere and instrumental variations for use in the fgcmcal fits. The intention is that this is run once for a given observatory/instrument and should only be updated when instrumental parameters change (e.g., updated filter and ccd throughput curves), or in the extremely rare case if an observatory is relocated to a different elevation or latitude.

This is the first task in a typical fgcmcal processing chain. The second is FgcmBuildFromIsolatedStarsTask, the third is FgcmFitCycleTask, and the fourth is FgcmOutputProductsTask.

Processing summary

FgcmMakeLutTask uses an input atmosphere table (preferable) or a list of atmosphere parameters, combined with the instrumental throughput as a function of position, to compute a look-up table used in the fgcmcal fits.

Python API summary

Retargetable subtasks

Configuration fields

Examples

See the cookbook for worked examples.