The following parameters refer to the telescope design as specified for Phase C. Additional Phase C reference files are available at GSFC. These include the field-of-view layout, detector properties, distortions, Zernike decompositions of the PSFs, pupil masks, transmission/effective area per filter, and more. Additional Coronagraph Instrument parameters and data are also available.

These spacecraft/instrument parameters, which are to be used in simulations and in designing science projects, are tied to a regular project design schedule (see the link to parameters in earlier mission phases below). To ensure consistency within the community, these parameters are released here only after approval by the Roman Space Telescope Project Scientist.

Parameter Categories

• Mission and Spacecraft
• Telescope
• WFI
• Filters
• Grism
• Prism
• Sensitivity
• Coronagraph Instrument
• Fully Commissioned Observing Modes
• Coronagraph
• Bandpasses
• Engineering Bandpasses
• Detector
• Imaging
• Spectroscopy
• Polarimetry
• Predicted Performance
• Observing Requirements

Phase C - current (released Jan. 20 2023)

List of Previous Spacecraft and Instrument Parameters.

Parameters as CSV Table

Parameter Tables

(Mouse over table cells to see full contents. Click column headers to sort.)

Mission and Spacecraft Parameters

Telescope Parameters

WFI Imager Parameters

WFI Filter Parameters

WFI Grism Parameters

WFI Prism Parameters

WFI Sensitivity Parameters

Fully Commissioned Coronagraph Instrument Observing Modes

Coronagraph Instrument Coronagraph Parameters

Coronagraph Instrument Primary Observing Bandpass Parameters

Coronagraph Instrument Engineering Bandpass Parameters

Coronagraph Instrument Detector Parameters

Coronagraph Instrument Imaging Parameters

Coronagraph Instrument Spectroscopy Parameters

Additional Coronagraph Instrument Parameters and Data

Coronagraph Instrument Polarimetry Parameters

Coronagraph Instrument Predicted Performance Parameters

Python code to calculate and plot the Roman Coronagraph’s flux ratio vs separation (working angle)

Coronagraph Instrument Observing Requirements