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RomanCuts

RomanCuts

A class to create cutouts from Roman WFI simulated images created by TRExS group using the RImTimSim package.

The class provides access to: - Per frame WCS - Season average WCS - Cutout cubes (ntime, npix, npix) from the simulated FFI stack - Save cubes to disk as ASDF

__init__ 

__init__(
    field: int,
    sca: int,
    filter: str = "F146",
    file_list: list = [],
)

Initializes the class with field, scs, filter, and file_list.

Parameters:

  • field (int) –

    The field number.

  • sca (int) –

    The instrument Sensor Chip Assembly number.

  • filter (str, default: 'F146' ) –

    The filter string (e.g., "F146"). Default is "F146".

  • file_list (list, default: [] ) –

    A list of file paths. Default is an empty list.

get_average_wcs 

get_average_wcs()

Computes an average WCS from all available frames

get_all_wcs 

get_all_wcs()

Extracts WCS information from all FFI files.

make_cutout 

make_cutout(
    radec: Tuple = (None, None),
    rowcol: Tuple[int, int] = (0, 0),
    size: Tuple[int, int] = (15, 15),
    dithered: bool = False,
)

Creates a cutout from the data.

Parameters:

  • radec (tuple of floats or None, default: (None, None) ) –

    Right ascension and declination coordinates (ra, dec). If None, rowcol is used. Default is (None, None).

  • rowcol (tuple of ints or None, default: (0, 0) ) –

    Row and column pixel coordinates (row, col). If None, radec is used. Default is (0, 0).

  • size (tuple of ints, default: (15, 15) ) –

    Size of the cutout in pixels (rows, columns). Default is (15, 15).

save_cutout 

save_cutout(
    output: Optional[str] = None, format: str = "asdf"
)

Saves the cutout to a file.

Parameters:

  • output (str, default: None ) –

    The output file path. If None, a default filename is generated.

  • format (str, default: 'asdf' ) –

    The file format ("asdf" or "fits"). Default is "asdf".