emirdrp.processing — Processing functions

class emirdrp.processing.checkers.Checker

A Node that checks.

run(img)

Combination routines

emirdrp.processing.combine.basic_processing(rinput, flow)
Parameters:
emirdrp.processing.combine.basic_processing_(frames, flow)
Parameters:

  • frames –

  • flow –

emirdrp.processing.combine.basic_processing_with_segmentation(rinput, flow, method=<function mean>, errors=True, bpm=None)
emirdrp.processing.combine.basic_processing_with_update(rinput, flow)
emirdrp.processing.combine.combine_images(images, method=<function mean>, method_kwargs=None, errors=False, prolog=None)

Combine a sequence of HDUList objects.

Using the following keywords:

  • NUM-NCOM

  • UUID, TSUTC1, TSUTC2

  • VARIANCE, MAP

Parameters:

  • images –

  • method –

  • method_kwargs (dict (optional)) –

  • errors (bool (optional)) –

  • prolog –

emirdrp.processing.combine.create_proc_hdulist(images, data_array)
emirdrp.processing.combine.process_ab(images, errors=False, prolog=None)

Process images in AB sequence

Parameters:

  • images –

  • errors –

  • prolog –

emirdrp.processing.combine.process_abba(images, errors=False, prolog=None)

Process images in ABBA sequence

Parameters:

  • images –

  • errors –

  • prolog –

emirdrp.processing.combine.resize(frames, shape, offsetsp, finalshape, window=None)
Parameters:

  • frames –

  • shape –

  • offsetsp –

  • finalshape –

  • window –

emirdrp.processing.combine.resize_hdul(hdul, newshape, region, extensions=None, window=None, scale=1, fill=0.0, conserve=True)
Parameters:

  • hdul –

  • newshape –

  • region –

  • extensions –

  • window –

  • scale –

  • fill –

  • conserve –

emirdrp.processing.combine.resize_hdulists(hdulists, shape, offsetsp, finalshape, window=None)
Parameters:

  • hdulists –

  • shape –

  • offsetsp –

  • finalshape –

  • window –

emirdrp.processing.combine.scale_with_median(method)

Adapt combine method to scale with median

emirdrp.processing.combine.segmentation_combined(data, snr_detect=10.0, fwhm=4.0, npixels=15, mask_corners=False)

Offsets from cross-correlation

emirdrp.processing.corr.filter_region(arr, level=4)
emirdrp.processing.corr.offset_from_crosscor(arr0, arr1, region, refine=True, refine_box=3, order='ij')
emirdrp.processing.corr.offset_from_crosscor_regions(arr0, arr1, regions, refine=True, refine_box=3, order='ij', tol=0.5)
emirdrp.processing.corr.offsets_from_crosscor(arrs, region, refine=True, refine_box=3, order='ij')
emirdrp.processing.corr.offsets_from_crosscor_regions(arrs, regions, refine=True, refine_box=3, order='ij', tol=0.5)
emirdrp.processing.corr.standarize(arr)
emirdrp.processing.corr.vertex_of_quadratic(coeffs)

Corrector to remove flat field

class emirdrp.processing.flatfield.FlatFieldCorrector(flatdata, datamodel=None, calibid='calibid-unknown', dtype='float32')

A Node that corrects a frame from flat-field.

run(img)
emirdrp.processing.info.gather_info(recipeinput)
emirdrp.processing.info.gather_info_dframe(dataframe)
emirdrp.processing.info.gather_info_frames(framelist)
emirdrp.processing.info.gather_info_hdu(hdulist)
emirdrp.processing.wcs.offsets_from_wcs(frames, pixref)

Compute offsets between frames using WCS information.

Parameters:

  • frames – sequence of FITS filenames or file descriptors

  • pixref – numpy array used as reference pixel

The sky world coordinates are computed on pixref using the WCS of the first frame in the sequence. Then, the pixel coordinates of the reference sky world-coordinates are computed for the rest of the frames.

The results is a numpy array with the difference between the computed pixel value and the reference pixel. The first line of the array is [0, 0], being the offset from the first image to itself.

emirdrp.processing.wcs.offsets_from_wcs_imgs(imgs, pixref)
emirdrp.processing.wcs.reference_pix_from_wcs(frames, pixref, origin=1)

Compute reference pixels between frames using WCS information.

The sky world coordinates are computed on pixref using the WCS of the first frame in the sequence. Then, the pixel coordinates of the reference sky world-coordinates are computed for the rest of the frames.

The results is a list with the position of the reference pixel in each image

emirdrp.processing.wcs.reference_pix_from_wcs_imgs(imgs, pixref, origin=1)

Compute reference pixels between frames using WCS information.

The sky world coordinates are computed on pixref using the WCS of the first frame in the sequence. Then, the pixel coordinates of the reference sky world-coordinates are computed for the rest of the frames.

The results is a list with the position of the reference pixel in each image