scopesim.optics.image_plane_utils

Functions

add_imagehdu_to_imagehdu(image_hdu, canvas_hdu)	Re-project one fits.ImageHDU onto another fits.ImageHDU.
add_table_to_imagehdu(table, canvas_hdu[, ...])	Add files from an astropy.Table to the image of an fits.ImageHDU.
affine_map(input[, matrix, rotation_angle, ...])	Apply an affine transformation matrix to an image around its centre.
calc_footprint(header[, wcs_suffix, new_unit])	Return the sky/detector positions [deg/mm] of the corners of a header WCS.
calc_table_footprint(table, x_name, y_name, ...)	Equivalent to calc_footprint(), but for tables instead of images.
create_wcs_from_points(points, pixel_scale)	Create astropy.wcs.WCS instance that fits all points inside.
det_wcs_from_sky_wcs(sky_wcs, pixel_scale, ...)	Create detector WCS from celestial WCS using pixel and plate scales.
get_canvas_header(hdu_or_table_list[, ...])	Generate a fits.Header with a WCS that covers everything in the FOV.
header_from_list_of_xy(x, y, pixel_scale[, ...])	Make a header large enough to contain all x,y on-sky coordinates.
overlay_image(small_im, big_im, coords[, ...])	Overlay small_im on top of big_im at the position specified by coords.
pix2val(header, x, y[, wcs_suffix])	Return the real coordinates [deg, mm] for coordinates from a Header WCS.
reorient_imagehdu(imagehdu[, wcs_suffix, ...])	Apply an affine transformation to the image, as given in its header.
rescale_imagehdu(imagehdu, pixel_scale[, ...])	Scale the .data array by the ratio of pixel_scale [deg] and CDELTn.
sky_wcs_from_det_wcs(det_wcs, pixel_scale, ...)	Create celestial WCS from detector WCS using pixel and plate scales.
split_header(hdr, chunk_size[, wcs_suffix])	Split a header into many smaller parts of the chunk_size.
sub_pixel_fractions(x, y)	Make a list of pixel coordinates and weights to reflect sub-pixel shifts.
val2pix(header, a, b[, wcs_suffix])	Return the pixel coordinates for real coordinates [deg, mm] from a WCS.