Instrument¶

Effective Aperture Instruments¶

nyx.instrument.effective_aperture Module¶

Classes¶

EffectiveApertureInstrument

An instrument whose pixels have a centre, a throughput weight and a bandpass.

Reading an iactrace scan¶

An instrument’s bandpass and per-pixel response normally come out of an iactrace ray trace. That scan is hours of Monte-Carlo work, so do it once, save the table, and build from the file afterwards:

# once, wherever iactrace is installed
table = iactrace.analysis.effective_aperture(telescope, camera, ...)
table.save("CT3_aperture.npz")

# ever after, with no ray tracer in the environment
inst = EffectiveApertureInstrument.from_iactrace_table(geo, "CT3_aperture.npz")

The archive is plain numpy, so reading it needs nothing beyond nyx’s own dependencies; the nyx[iactrace] extra is required only to run a scan through from_iactrace().

nyx.instrument.aperture_table Module¶

Functions¶

`load_aperture_table`(path)	Read an effective-aperture table iactrace saved to `.npz`.
`tabulated_bandpass`(wvls, transmission)	Build an instrument bandpass callable from a tabulated curve.

Classes¶

EffectiveApertureTable

iactrace effective-aperture table, read from a file.

Pixel response interpolation¶

nyx.instrument.interpolation Module¶

Functions¶

`gaussian_blur`(field, sigma_nodes)	Blur a lattice array by a separable Gaussian, widths in lattice nodes.
`integrate_response`(lattice, values)	Simpson-integrate each pixel's response.
`interpolate_pixel_rates`(grid, values, coords)	Bilinear interpolation of the FOV evaluation grid at pixel centres.
`project_lattice`(lattice, values, coords, rates)	Project point sources onto pixels via the shared response lattice.
`response_centroid`(lattice, values)	Where each pixel looks via the first moment of its response.

Classes¶

PixelLattice

The sampling lattice every pixel's response grid is a window onto.