Constants¶
Physical and instrument constants used throughout PSFCraft.
from psfcraft import constants as csts
Photometric filter cuts¶
csts.FILTER_Y_CUTS # [950, 1212] nm
csts.FILTER_J_CUTS # [1168, 1567] nm
csts.FILTER_H_CUTS # [1522, 2021] nm
Telescope parameters (Euclid/NISP defaults)¶
csts.TELESCOPE_FOCAL_LENGTH # 24.5 m
csts.DIAMETER_PRIMARY_MIRROR # 1.2 m
csts.DIAMETER_SECONDARY_MIRROR # 0.398 m
Detector parameters¶
csts.DETECTOR_SIZE # 2048 pixels
csts.DETECTOR_PIXEL_SIZE # 17.98 µm
csts.DETECTOR_PIXEL_SCALE # 0.298 arcsec/pixel
Stellar types¶
csts.STELLAR_SPECTRAL_TYPES # ['O','B','A','F','G','K','M']
csts.STELLAR_TEMPERATURES_MEAN # [40000, 15000, 8200, 6600, 5800, 4300, 3300] K