Implementation for NIRSpec

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Table of contents

1 Introduction 
1.1 The James Webb Space Telescope
1.2 Overview of the NIRSpec instrument
1.3 Optical layout of JWST and NIRSpec
1.4 The NIRSpec Instrument Performance Simulator
1.5 Goal and structure of this thesis
2 IPS software verification 
2.1 Introduction
2.2 Revision of coordinate transforms
2.2.1 General formalism
2.2.2 Derivation of transform parameters
2.2.3 Slit tilt implementation
2.3 Revision of Fourier propagation
2.3.1 General application
2.3.2 Geometrical orientation
2.3.3 Single propagation steps
2.3.4 Implementation for NIRSpec
2.3.5 Sampling of PSFs and wavefront errors
2.3.6 Required sampling for NIRSpec
3 NIRSpec model description 
3.1 Model data overview
3.2 Subsystem and telescope data
3.3 NIRSpec as-built optical model
3.3.1 Motivation
3.3.2 Model description
3.3.3 Model verification and transformation to cold
3.3.4 Relation between wavefronts and coordinate transforms
3.3.5 Data extraction for the IPS model
4 Science software tools 
4.1 Science data interface
4.1.1 Motivation
4.1.2 Object positioning
4.1.3 Object input file types
4.1.4 Object separation criteria
4.1.5 Technical implementation
4.2 Spectrum extraction pipeline
4.2.1 Purpose and scope
4.2.2 Software implementation
4.2.3 Spectrum extraction operations
5 NIRSpec model verification 
5.1 Motivation
5.2 Instrument geometry
5.2.1 Initial data and manual tuning
5.2.2 Model optimization
5.2.3 GWA tilt sensor integration in extraction
5.3 Test of IPS with tuned instrument model
5.4 Calibration Light Source spectra
5.5 Instrument efficiency
5.5.1 Filter transmissions
5.5.2 Grating efficiencies
5.5.3 Overall instrument throughput
5.5.4 IFU throughput
5.6 Limitations of simulations
6 NIRSpec science simulations 
6.1 Multi-object deep field
6.1.1 Introduction
6.1.2 Observation scene creation
6.1.3 Galaxy shapes
6.1.4 Galaxy spectra
6.1.5 Exposure simulation
6.1.6 Spectrum extraction
6.1.7 Results and discussion
6.2 Exoplanetary transits
6.2.1 Introduction
6.2.2 Host star brightness limits
6.2.3 Noise from pointing jitter
6.2.4 Effective integration times
6.2.5 Signals and noise
6.2.6 Simulations of HD189733b
6.2.7 Simulations of GJ1214b
6.2.8 Simulations of an Earth-sized planet in the habitable zone
7 Conclusion and outlook 
A Additional images 
A.1 Verification of the as-built optical model
A.1.1 Measured wavefront errors at the FPA
A.1.2 Simulated wavefront errors at the FPA
A.1.3 Wavefront error residuals at the FPA
A.2 NIRSpec model data
A.2.1 Wavefront error maps
A.2.2 Efficiencies
B Publications 
B.1 Overview
B.2 Verification of the IPS with demonstration model data
B.3 First simulation of a JWST/NIRSpec observation
Bibliography