def _resolve_object(target):
"""Ask MAST to resolve an object string to a set of coordinates."""
from astroquery.mast.core import MastClass
# `_resolve_object` was renamed `resolve_object` in astroquery 0.3.10 (2019)
try:
return MastClass().resolve_object(target)
except AttributeError:
return MastClass()._resolve_object(target)
def _fetch_tesscut_path(self, target, sector, download_dir, cutout_size):
"""Downloads TESS FFI cutout and returns path to local file.
Parameters
----------
download_dir : str
Path to location of `.lightkurve-cache` directory where downloaded
cutouts are stored
cutout_size : int, float or tuple
Side length of cutout in pixels. Tuples should have dimensions (y, x).
Default size is (5, 5)
Returns
-------
path : str
Path to locally downloaded cutout file
"""
from astroquery.mast import TesscutClass
from astroquery.mast.core import MastClass
coords = MastClass()._resolve_object(target)
# Set cutout_size defaults
if cutout_size is None:
cutout_size = 5
# Check existence of `~/.lightkurve-cache/tesscut`
tesscut_dir = os.path.join(download_dir, 'tesscut')
if not os.path.isdir(tesscut_dir):
# if it doesn't exist, make a new cache directory
try:
os.mkdir(tesscut_dir)
# downloads into default cache if OSError occurs
except OSError:
tesscut_dir = download_dir
# Resolve SkyCoord of given target
coords = MastClass()._resolve_object(target)
cutout_path = TesscutClass().download_cutouts(coords,
size=cutout_size,
sector=sector,
path=tesscut_dir)
path = os.path.join(download_dir, cutout_path[0][0])
return path