mProjectPP¶
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montage_wrapper.commands.
mProjectPP
(in_image, out_image, template_header, factor=None, debug_level=None, border=None, status_file=None, alternate_header=None, hdu=None, scale=None, weight_file=None, threshold=None, whole=False)[source] [edit on github]¶ mProjectPP reprojects a single image to the scale defined in an alternate FITS header template generated (usually) by mTANhdr. The program produces a pair of images: the reprojected image and an “area” image consisting of the fraction input pixel sky area that went into each output pixel. This area image goes through all the subsequent processing that the reprojected image does, allowing it to be properly coadded at the end.
Parameters: in_image : str
Input FITS file to be reprojected.
out_image : str
Path to output FITS file to be created.
template_header : str
FITS header template to be used in generation of output FITS
factor : float, optional
Processing is done utilizing the drizzle algorithm. factor is a floating point number; recommended drizzle factors are from 0.5 to 1.
debug_level : int, optional
Causes additional debugging information to be printed to stdout. Valid levels are 1-5; for levels greater than 1, it’s recommended to redirect the output into a text file.
border : int, optional
Ignores border pixels around the image edge when performing calculations.
status_file : str, optional
Output and errors are written to status_file instead of being written to stdout.
alternate_header : str, optional
Specifies an alternate FITS header for use in mProjectPP calculations, allows substitution of psuedo-TAN headers created by mTANHdr.
hdu : int, optional
Specify the FITS extension to re-project if the FITS image is multi- extension.
scale : float, optional
Multiple the pixel values by scale when reprojecting. For instance, each 2MASS image has a different scale factor (very near 1.0) to correct for varying magnitude-zero points.
weight_file : str, optional
Path to a weight map to be used when reading values from the input image.
threshold : float, optional
If using a weight image; only use those pixels where the weight value is above threshold.
whole : bool, optional
Reproject the whole image even if part of it is outside the region of interest (don’t crop while re-projecting).