Overview

This tool computes the spectral energy distribution of the backgrounds in a given direction and for a range of wavelengths.


Input Data Specifications

Spacecraft/Telescope Architecture (ARCH)

Nominal JWST orbit -- large L2 Lissajous (2012.092 to 2027.124; 15-yr duration)
Alternative JWST orbit -- worst-case stray-light orbit (2011.254 to 2021.219; 10-yr duration)
Other: * See Note.

Integrated Science Instrument Module (ISIM)

JWST Requirements
JWST Goals
Other: * See Note.

Design Reference Mission (DRM)

Science Operations Design Reference Mission (SO-DRM)
Ad-Hoc Science Working Group (ASWG) Program
Other: * See Note.
Single Visit Form Input (Enter the data below)
Target
Coordinates , degrees
Coord. System

SI Configuration
Sci Instrument
Instr. Config
Readout Mode
Filter 1
Filter 2
Pupil/Grating 1
Pupil/Grating 2
Wavelength microns

*Note: User-supplied filenames should have a .txt extension.


Processing and Reporting Options

Determine backgrounds as

 Run in batch mode.
 Report input data as well as results.

The results are based on a data set consisting of values calculated at equally spaced points around an orbit. For each observation, the following report options are available:

 Display the median data set value
 Display the minimum, median and maximum data set values
 Display the minimum and maximum data set values
 Display the entire data set (all time points -- only applicable with single-visit input)

Calendar length: years
Stray Light model: - for the OTA, sunshield, and background sources. NOTE that the finite-element model may take several hours to complete with the full DRM.
Comment string: (will be included in output file)




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