deepdisc.astrodet.hsc

Functions

get_tract_patch_from_coord(coord[, f])

Get tract and patch from SkyCoord

get_hsc_data(dirpath[, filters, tract, patch, coord, ...])

Get HSC data given tract/patch info or SkyCoord

get_hsc_DR3_data(dirpath[, filters, tract, patch, ...])

Get HSC data given tract/patch info or SkyCoord

read_image(filenames[, normalize, stretch, Q, m, ...])

Module Contents

get_tract_patch_from_coord(coord, f='data/hsc/tracts_patches_UD-COSMOS.txt')[source]

Get tract and patch from SkyCoord

Parameters:

  • coord (SkyCoord) – Coodinate of object

  • f (str) – Path to UD-COSMOS.txt data file

Returns:

  • tract (Astropy HDUData) – Tract ID

  • patch ([int, int]) – Patch ID tuple

get_hsc_data(dirpath, filters=['g', 'r', 'i'], tract=10054, patch=[0, 0], coord=None, cutout_size=[128, 128])[source]

Get HSC data given tract/patch info or SkyCoord

Parameters:

  • dirpath (str) – Path to HSC image file directory

  • filters (list) – A list of filters for your images. Default is [‘g’, ‘r’, ‘i’].

  • tract (int) – An integer used for specifying the tract. Default is 10054

  • patch ([int, int]) – Patch #,#. Default is [0,0]

  • coord (SkyCoord) – Astropy SkyCoord, when specified, overrides tract/patch info and attempts to lookup HSC filename from ra, dec. Default is None

  • cutout_size ([int, int]) – Size of cutout to use (set to None for no cutting). Default is [128, 128]

  • form (The image filepath is in the) – {dirpath}/deepCoadd/HSC-{filter}/{tract}/{patch[0]},{patch[1]}/calexp-HSC-{filter}-{tract}-{patch[0]},{patch[1]}.fits

Returns:

data – HSC data array with dimensions [filters, N, N]

Return type:

ndarray

get_hsc_DR3_data(dirpath, filters=['g', 'r', 'i'], tract=10054, patch=[0, 0], coord=None, cutout_size=[128, 128])[source]

Get HSC data given tract/patch info or SkyCoord

Parameters:

  • dirpath (str) – Path to HSC image file directory

  • filters (list) – A list of filters for your images. Default is [‘g’, ‘r’, ‘i’].

  • tract (int) – An integer used for specifying the tract. Default is 10054

  • patch ([int, int]) – Patch #,#. Default is [0,0]

  • coord (SkyCoord) – Astropy SkyCoord, when specified, overrides tract/patch info and attempts to lookup HSC filename from ra, dec. Default is None

  • cutout_size ([int, int]) – Size of cutout to use (set to None for no cutting). Default is [128, 128]

  • form (The image filepath is in the) – {dirpath}/deepCoadd/HSC-{filter}/{tract}/{patch[0]},{patch[1]}/calexp-HSC-{filter}-{tract}-{patch[0]},{patch[1]}.fits

Returns:

data – HSC data array with dimensions [filters, N, N]

Return type:

ndarray

read_image(filenames, normalize='lupton', stretch=0.5, Q=10, m=0, ceil_percentile=99.995, dtype=np.uint8, A=10000.0, do_norm=True)[source]