def check_visibility():
star_std = log.read_local_log('alignment', 'star_std')
all_stars_dict = plc.open_dict('all_stars.pickle')
stars = np.array(all_stars_dict['all_stars'])
polar_coords = []
fits = pf.open(science[0])
for star in all_stars_dict['all_stars']:
polar_coords.append(
plc.cartesian_to_polar(star[0], star[1],
fits[1].header[align_x0_key],
fits[1].header[align_y0_key]))
fits.close()
in_fov = np.ones(len(polar_coords))
percent = 0
lt0 = time.time()
for counter, science_file in enumerate(science):
if show_progress.exit:
return None
in_fov_single = []
fits = pf.open(science_file)
if fits[1].header[align_x0_key]:
ref_x_position = fits[1].header[align_x0_key]
ref_y_position = fits[1].header[align_y0_key]
ref_u_position = fits[1].header[align_u0_key]
for star in polar_coords:
cartesian_x = ref_x_position + star[0] * np.cos(
ref_u_position + star[1])
cartesian_y = ref_y_position + star[0] * np.sin(
ref_u_position + star[1])
if (cartesian_x > 3 * star_std and
cartesian_x < len(fits[1].data[0]) - 3 * star_std
and cartesian_y > 3 * star_std and
cartesian_y < len(fits[1].data) - 3 * star_std):
in_fov_single.append(1)
else:
in_fov_single.append(0)
in_fov *= in_fov_single
fits.close()
# counter
new_percent = round(100 * (counter + 1) / float(len(science)), 1)
if new_percent != percent:
lt1 = time.time()
rm_time = (100 - new_percent) * (lt1 - lt0) / new_percent
hours = rm_time / 3600.0
minutes = (hours - int(hours)) * 60
seconds = (minutes - int(minutes)) * 60
progress_bar_3['value'] = new_percent
percent_label_3.configure(
text='{0} % ({1}h {2}m {3}s left)'.format(
new_percent, int(hours), int(minutes), int(seconds)))
percent = new_percent
show_progress.update()
all_stars_dict['in_fov'] = np.array(in_fov)
visible_fov_x_min = np.min(stars[np.where(in_fov), 0]) - 3 * star_std
visible_fov_x_max = np.max(stars[np.where(in_fov), 0]) + 3 * star_std
visible_fov_y_min = np.min(stars[np.where(in_fov), 1]) - 3 * star_std
visible_fov_y_max = np.max(stars[np.where(in_fov), 1]) + 3 * star_std
log.write_local_log('alignment', float(visible_fov_x_min), 'min_x')
log.write_local_log('alignment', float(visible_fov_y_min), 'min_y')
log.write_local_log('alignment', float(visible_fov_x_max), 'max_x')
log.write_local_log('alignment', float(visible_fov_y_max), 'max_y')
plc.save_dict(all_stars_dict, 'all_stars.pickle')
def align():
star_std = log.read_local_log('alignment', 'star_std')
psf = (log.read_local_log('alignment', 'star_psf_x'),
log.read_local_log('alignment', 'star_psf_y'))
all_stars_dict = plc.open_dict('all_stars.pickle')
stars = np.array(all_stars_dict['all_stars'])
fits = pf.open(science[0], memmap=False)
frame_mean = fits[1].header[mean_key]
frame_std = fits[1].header[std_key]
shift_tolerance = int(
max(len(fits[1].data), len(fits[1].data[0])) *
(shift_tolerance_p / 100.0))
y_length, x_length = fits[1].data.shape
circles_diameter = 0.02 * max(y_length, x_length)
bright_stars = []
std_limit = 30
while len(bright_stars) < 100 and std_limit >= 5.0:
bright_stars = []
for star in stars:
if star[2] + star[3] < 2.0 * burn_limit / 3.0:
if star[-1] > (2 * np.pi *
(std_limit * frame_std) * psf[0] * psf[1]):
alignment_log(
star[-1],
2 * np.pi * (frame_mean + std_limit * frame_std) *
psf[0] * psf[1])
bright_stars.append(star)
std_limit -= 5
stars = sorted(bright_stars, key=lambda x: -x[-1] / (x[-2]**3))
x_ref_position = stars[0][0]
y_ref_position = stars[0][1]
del stars[0]
# take the rest as calibration stars and calculate their polar coordinates relatively to the first
calibration_stars_polar = []
for star in stars:
r_position, u_position = plc.cartesian_to_polar(
star[0], star[1], x_ref_position, y_ref_position)
if r_position > 5 * star_std:
calibration_stars_polar.append([r_position, u_position])
stars = sorted(stars, key=lambda x: -x[-1])
calibration_stars_polar_snr = []
for star in stars:
r_position, u_position = plc.cartesian_to_polar(
star[0], star[1], x_ref_position, y_ref_position)
if r_position > 5 * star_std:
calibration_stars_polar_snr.append([r_position, u_position])
if len(calibration_stars_polar) <= min_calibration_stars_number:
check_num = len(calibration_stars_polar) - 0.5
check_num_snr = len(calibration_stars_polar) - 0.5
else:
check_num = max(min_calibration_stars_number - 0.5,
int(len(calibration_stars_polar)) / 10 - 0.5)
check_num_snr = max(min_calibration_stars_number - 0.5,
int(len(calibration_stars_polar)) / 20 - 0.5)
x0, y0, u0, comparisons = x_ref_position, y_ref_position, 0, calibration_stars_polar
x0, y0, u0, comparisons_snr = x_ref_position, y_ref_position, 0, calibration_stars_polar_snr
fits.close()
# set the looking window and angular step
circle = mpatches.Circle((x0, y0),
circles_diameter,
ec='r',
fill=False)
ax.add_patch(circle)
for ii in comparisons[:10]:
circle = mpatches.Circle((x0 + ii[0] * np.cos(u0 + ii[1]),
y0 + ii[0] * np.sin(u0 + ii[1])),
circles_diameter,
ec='w',
fill=False)
ax.add_patch(circle)
# for each science_file
percent = 0
skip_time = 0
lt0 = time.time()
for counter, science_file in enumerate(science):
if show_progress.exit:
return None
alignment_log('\n', science_file)
label_2.configure(text='Running Alignment: {0}'.format(
science_file.split(os.sep)[-1]))
label_2.update()
label_3.configure(text='')
label_3.update()
fits = pf.open(science_file, mode='update')
ax.cla()
ax.imshow(fits[1].data,
origin='lower',
cmap=cm.Greys_r,
vmin=fits[1].header[mean_key] +
frame_low_std * fits[1].header[std_key],
vmax=fits[1].header[mean_key] +
frame_upper_std * fits[1].header[std_key])
ax.axis('off')
circle = mpatches.Circle((-100, -100),
circles_diameter,
ec='r',
fill=False)
ax.add_patch(circle)
rotation_detected = False
# super fast detection test
alignment_log('Test no shift', x0, y0, u0)
star = plc.find_single_star(fits[1].data,
x0,
y0,
mean=fits[1].header[mean_key],
std=fits[1].header[std_key],
burn_limit=burn_limit,
star_std=star_std)
if star:
tests = []
max_x = star[0]
max_y = star[1]
alignment_log(science_file)
alignment_log('Testing star at: ', max_x, max_y,
', with rotation:', u0)
test = 0
for comp in comparisons:
check_x = int(max_x + comp[0] * np.cos(u0 + comp[1]))
check_y = int(max_y + comp[0] * np.sin(u0 + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y - star_std:check_y +
star_std + 1, check_x -
star_std:check_x + star_std + 1])
check_lim = (fits[1].header[mean_key] +
3 * fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ', check_x, check_y,
', Test: ', test)
if abs(test) > check_num:
break
tests.append([test, max_x, max_y])
alignment_log([test, max_x, max_y])
tests.sort()
test, max_x, max_y = tests[-1]
if test < check_num:
stars_detected = False
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = u0
else:
stars_detected = False
alignment_log(stars_detected, x0, y0, u0)
# super fast detection test
if show_progress.exit:
return None
delta_skip_time = time.time()
# look for reasonable field shift
if not stars_detected:
alignment_log('Testing small shift')
label_3.configure(text='Testing small shift and rotation')
label_3.update()
stars = plc.find_all_stars(fits[1].data,
x_low=x0 - shift_tolerance,
x_upper=x0 + shift_tolerance,
y_low=y0 - shift_tolerance,
y_upper=y0 + shift_tolerance,
x_centre=x0,
y_centre=y0,
mean=fits[1].header[mean_key],
std=fits[1].header[std_key],
burn_limit=burn_limit,
star_std=star_std)[0]
if show_progress.exit:
return None
if stars:
tests = []
for star in stars:
if show_progress.exit:
return None
max_x = star[0]
max_y = star[1]
circle.set_center((max_x, max_y))
canvas.draw()
show_progress.update()
alignment_log(science_file)
alignment_log('Testing star at: ', max_x, max_y,
',with rotation:', u0)
test = 0
for comp in comparisons:
check_x = int(max_x +
comp[0] * np.cos(u0 + comp[1]))
check_y = int(max_y +
comp[0] * np.sin(u0 + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y - star_std:check_y +
star_std + 1,
check_x - star_std:check_x +
star_std + 1])
check_lim = (fits[1].header[mean_key] +
3 * fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ', check_x,
check_y, ', Test: ', test)
if abs(test) > check_num:
break
tests.append([test, max_x, max_y])
alignment_log([test, max_x, max_y])
if test > check_num:
break
tests.sort()
test, max_x, max_y = tests[-1]
if test < check_num:
tests = []
for star in stars:
if show_progress.exit:
return None
max_x = star[0]
max_y = star[1]
circle.set_center((max_x, max_y))
canvas.draw()
show_progress.update()
alignment_log(science_file)
alignment_log('LOW-SNR Testing star at: ', max_x,
max_y, ', with rotation:', u0)
test = 0
for comp in comparisons_snr:
check_x = int(max_x +
comp[0] * np.cos(u0 + comp[1]))
check_y = int(max_y +
comp[0] * np.sin(u0 + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y -
star_std:check_y +
star_std + 1, check_x -
star_std:check_x +
star_std + 1])
check_lim = (fits[1].header[mean_key] + 3 *
fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ', check_x,
check_y, ', Test: ', test)
if abs(test) > check_num_snr:
break
tests.append([test, max_x, max_y])
alignment_log([test, max_x, max_y])
if test > check_num_snr:
break
tests.sort()
test, max_x, max_y = tests[-1]
if test < min_calibration_stars_number - 0.5:
stars_detected = False
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = u0
rotation_detected = True
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = u0
rotation_detected = True
else:
stars_detected = False
alignment_log(stars_detected, x0, y0, u0)
# look for reasonable field shift
if show_progress.exit:
return None
# look for reasonable field rotation
if not stars_detected:
alignment_log('Testing small rotation')
ustep = np.arcsin(
float(star_std) /
comparisons[int(len(comparisons) / 2)][0])
angles = np.append(
np.arange(-rotation_tolerance, rotation_tolerance, ustep),
np.arange(-rotation_tolerance, rotation_tolerance, ustep) +
np.pi)
if stars:
tests = []
for star in stars:
if show_progress.exit:
return None
test = 0
max_x = star[0]
max_y = star[1]
circle.set_center((max_x, max_y))
canvas.draw()
show_progress.update()
for rotation in angles:
alignment_log(science_file)
alignment_log('Testing star at: ', max_x, max_y,
', with rotation: ', rotation)
test = 0
for comp in comparisons:
check_x = int(max_x + comp[0] *
np.cos(rotation + comp[1]))
check_y = int(max_y + comp[0] *
np.sin(rotation + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y -
star_std:check_y +
star_std + 1, check_x -
star_std:check_x +
star_std + 1])
check_lim = (fits[1].header[mean_key] + 3 *
fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ', check_x,
check_y, ', Test: ', test)
if abs(test) > check_num:
break
tests.append([test, max_x, max_y, rotation])
alignment_log([test, max_x, max_y, rotation])
if test > check_num:
break
if test > check_num:
break
tests.sort()
test, max_x, max_y, rotation = tests[-1]
if test < check_num:
for star in stars:
if show_progress.exit:
return None
test = 0
max_x = star[0]
max_y = star[1]
circle.set_center((max_x, max_y))
canvas.draw()
show_progress.update()
for rotation in angles:
alignment_log(science_file)
alignment_log('LOW SNR Testing star at: ',
max_x, max_y,
', with rotation: ', rotation)
test = 0
for comp in comparisons_snr:
check_x = int(max_x + comp[0] *
np.cos(rotation + comp[1]))
check_y = int(max_y + comp[0] *
np.sin(rotation + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y -
star_std:check_y +
star_std + 1,
check_x -
star_std:check_x +
star_std + 1])
check_lim = (
fits[1].header[mean_key] +
3 * fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ',
check_x, check_y, ', Test: ',
test)
if abs(test) > check_num_snr:
break
tests.append([test, max_x, max_y, rotation])
alignment_log([test, max_x, max_y, rotation])
if test > check_num_snr:
break
if test > check_num_snr:
break
tests.sort()
test, max_x, max_y, rotation = tests[-1]
if test < check_num_snr:
stars_detected = False
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = rotation
rotation_detected = True
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = rotation
rotation_detected = True
else:
stars_detected = False
alignment_log(stars_detected, x0, y0, u0)
# look for reasonable field rotation
if not stars_detected:
circle.set_center((-100, -100))
canvas.draw()
show_progress.update()
skip_frame = askyesno(
'Alignment',
'Stars not found close to their previous positions.\n'
'Do you want to skip this frame?',
parent=show_progress.root)
else:
skip_frame = False
if show_progress.exit:
return None
# look for large field shift
if not stars_detected and not skip_frame:
alignment_log('Testing large shift and rotation')
label_3.configure(text='Testing large shift and rotation')
label_3.update()
canvas.draw()
show_progress.update()
stars = plc.find_all_stars(fits[1].data,
mean=fits[1].header[mean_key],
std=fits[1].header[std_key],
burn_limit=burn_limit,
star_std=star_std,
order_by_flux=True)[0]
if show_progress.exit:
return None
if stars:
tests = []
for star in stars:
if show_progress.exit:
return None
max_x = star[0]
max_y = star[1]
circle.set_center((max_x, max_y))
canvas.draw()
show_progress.update()
alignment_log(science_file)
alignment_log('LOW SNR Testing star at: ', max_x,
max_y, ', with rotation: ', u0)
test = 0
for comp in comparisons_snr:
check_x = int(max_x +
comp[0] * np.cos(u0 + comp[1]))
check_y = int(max_y +
comp[0] * np.sin(u0 + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y - star_std:check_y +
star_std + 1,
check_x - star_std:check_x +
star_std + 1])
check_lim = (fits[1].header[mean_key] +
3 * fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ', check_x,
check_y, ', Test: ', test)
if abs(test) > check_num_snr:
break
tests.append([test, max_x, max_y])
alignment_log([test, max_x, max_y])
if test > check_num_snr:
break
tests.sort()
test, max_x, max_y = tests[-1]
if test < check_num_snr:
stars_detected = False
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = u0
rotation_detected = True
else:
stars_detected = False
alignment_log(stars_detected, x0, y0, u0)
# look for large field shift
# look for large field rotation
if not stars_detected and not skip_frame:
alignment_log('Test large rotation')
ustep = np.arcsin(
float(star_std) /
comparisons[int(len(comparisons) / 2)][0])
angles = np.array([np.pi, 0])
for ff in range(1, int(np.pi / ustep) + 1):
angles = np.append(angles, np.pi - ff * ustep)
angles = np.append(angles, np.pi + ff * ustep)
angles = np.append(angles, 0 - ff * ustep)
angles = np.append(angles, 0 + ff * ustep)
if stars:
if show_progress.exit:
return None
tests = []
for rotation in angles:
test = 0
for star in stars:
max_x = star[0]
max_y = star[1]
circle.set_center((max_x, max_y))
canvas.draw()
show_progress.update()
alignment_log(science_file)
alignment_log('LOW SNR Testing star at: ', max_x,
max_y, ', with rotation: ', rotation)
test = 0
for comp in comparisons_snr:
check_x = int(max_x + comp[0] *
np.cos(rotation + comp[1]))
check_y = int(max_y + comp[0] *
np.sin(rotation + comp[1]))
if 0 < check_x < x_length and 0 < check_y < y_length:
check_sum = np.sum(
fits[1].data[check_y -
star_std:check_y +
star_std + 1, check_x -
star_std:check_x +
star_std + 1])
check_lim = (fits[1].header[mean_key] + 2 *
fits[1].header[std_key]) * (
(2 * star_std + 1)**2)
if check_sum > check_lim:
test += 1
else:
test -= 1
alignment_log('Check ref. star at: ',
check_x, check_y, ', Test: ',
test)
if abs(test) > check_num_snr:
break
tests.append([test, max_x, max_y, rotation])
alignment_log([test, max_x, max_y, rotation])
if test > check_num_snr:
break
if test > check_num_snr:
break
tests.sort()
test, max_x, max_y, rotation = tests[-1]
if test < check_num_snr:
stars_detected = False
else:
stars_detected = True
x0 = max_x
y0 = max_y
u0 = rotation
rotation_detected = True
else:
stars_detected = False
alignment_log(stars_detected, x0, y0, u0)
# look for large field rotation
skip_time += time.time() - delta_skip_time
if show_progress.exit:
return None
if stars_detected:
if rotation_detected:
test_u0 = []
test_cos = []
test_sin = []
for ii in comparisons[:int(check_num + 0.5)]:
star = plc.find_single_star(
fits[1].data,
x0 + ii[0] * np.cos(u0 + ii[1]),
y0 + ii[0] * np.sin(u0 + ii[1]),
mean=fits[1].header[mean_key],
std=fits[1].header[std_key],
burn_limit=burn_limit,
star_std=star_std)
if star:
diff = plc.cartesian_to_polar(
star[0], star[1], x0, y0)[1] - ii[1]
if diff < 0:
diff += 2 * np.pi
test_u0.append(diff)
test_cos.append(np.cos(diff))
test_sin.append(np.sin(diff))
if len(test_u0) > 0:
test_u0 = np.mean(test_u0)
test_cos = np.mean(test_cos)
test_sin = np.mean(test_sin)
u0 = np.arccos(test_cos)
if test_sin < 0:
u0 = np.pi + (np.pi - u0)
fits[1].header.set(align_x0_key, x0)
fits[1].header.set(align_y0_key, y0)
fits[1].header.set(align_u0_key, u0)
circle = mpatches.Circle((x0, y0),
circles_diameter,
ec='r',
fill=False)
ax.add_patch(circle)
for ii in comparisons[:int(check_num + 0.5)]:
circle = mpatches.Circle((x0 + ii[0] * np.cos(u0 + ii[1]),
y0 + ii[0] * np.sin(u0 + ii[1])),
circles_diameter,
ec='w',
fill=False)
ax.add_patch(circle)
canvas.draw()
show_progress.update()
else:
fits[1].header.set(align_x0_key, False)
fits[1].header.set(align_y0_key, False)
fits[1].header.set(align_u0_key, False)
fits.flush()
fits.close()
# counter
new_percent = round(100 * (counter + 1) / float(len(science)), 1)
if new_percent != percent:
lt1 = time.time()
rm_time = (100 - new_percent) * (lt1 - lt0 -
skip_time) / new_percent
hours = rm_time / 3600.0
minutes = (hours - int(hours)) * 60
seconds = (minutes - int(minutes)) * 60
progress_bar_2['value'] = new_percent
percent_label_2.configure(
text='{0} % ({1}h {2}m {3}s left)'.format(
new_percent, int(hours), int(minutes), int(seconds)))
percent = new_percent
show_progress.update()
if show_progress.exit:
return None
def plot_current(self):
if self.exit:
self.after(self.save)
else:
if self.stars_detected:
if self.rotation_detected:
test_u0 = []
test_cos = []
test_sin = []
for ii in self.comparisons[:int(self.check_num + 0.5)]:
check_x = self.x0 + ii[0] * np.cos(self.u0 + ii[1])
check_y = self.y0 + ii[0] * np.sin(self.u0 + ii[1])
star = plc.find_single_star(self.fits[1].data,
check_x,
check_y,
mean=self.mean,
std=self.std,
burn_limit=self.burn_limit,
star_std=self.star_std)
if star:
diff = plc.cartesian_to_polar(
star[0], star[1], self.x0, self.y0)[1] - ii[1]
if diff < 0:
diff += 2 * np.pi
test_u0.append(diff)
test_cos.append(np.cos(diff))
test_sin.append(np.sin(diff))
if len(test_u0) > 0:
test_cos = np.median(test_cos)
test_sin = np.median(test_sin)
self.u0 = np.arccos(test_cos)
if test_sin < 0:
self.u0 = np.pi + (np.pi - self.u0)
self.fits[1].header.set(self.log.align_x0_key, self.x0)
self.fits[1].header.set(self.log.align_y0_key, self.y0)
self.fits[1].header.set(self.log.align_u0_key, self.u0)
self.circle.set_center((self.x0, self.y0))
for ii in self.comparisons[:int(self.check_num + 0.5)]:
circle = mpatches.Circle(
(self.x0 + ii[0] * np.cos(self.u0 + ii[1]),
self.y0 + ii[0] * np.sin(self.u0 + ii[1])),
self.circles_diameter,
ec='w',
fill=False)
self.progress_figure.ax.add_patch(circle)
else:
self.fits[1].header.set(self.log.align_x0_key, False)
self.fits[1].header.set(self.log.align_y0_key, False)
self.fits[1].header.set(self.log.align_u0_key, False)
self.all_frames[self.science_file][
self.log.align_x0_key] = self.fits[1].header[
self.log.align_x0_key]
self.all_frames[self.science_file][
self.log.align_y0_key] = self.fits[1].header[
self.log.align_y0_key]
self.all_frames[self.science_file][
self.log.align_u0_key] = self.fits[1].header[
self.log.align_u0_key]
if not self.fits[1].header[self.log.align_x0_key]:
self.all_frames[self.science_file][self.log.skip_key] = True
self.fits.flush()
self.fits.close()
self.progress_figure.draw()
if self.skip_time == 0:
self.progress_alignment.update()
else:
self.progress_alignment.update(skip=time.time() -
self.skip_time)
self.skip_time = 0
self.science_counter += 1
if self.science_counter >= len(self.science_files):
self.progress_all_stars.set(
'Aligning all stars in all frames...')
self.after(self.save)
else:
self.after(self.align)
def check_visibility(self):
if self.exit:
self.def_close()
else:
all_stars_dict = plc.open_dict('all_stars.pickle')
stars = np.array(all_stars_dict['all_stars'])
fits = plc.open_fits(
os.path.join(self.log.reduction_directory,
self.science_files[0]))
polar_coords = []
for star in all_stars_dict['all_stars']:
polar_coords.append(
plc.cartesian_to_polar(
star[0], star[1], self.all_frames[
self.science_files[0]][self.log.align_x0_key],
self.all_frames[self.science_files[0]][
self.log.align_y0_key]))
in_fov = np.ones(len(polar_coords))
for science_file in self.science_files:
metadata = self.all_frames[science_file]
if self.exit:
self.def_close()
ref_x_position = metadata[self.log.align_x0_key]
ref_y_position = metadata[self.log.align_y0_key]
ref_u_position = metadata[self.log.align_u0_key]
star_std = metadata[self.log.psf_key]
if ref_x_position:
in_fov_single = []
for star in polar_coords:
cartesian_x = ref_x_position + star[0] * np.cos(
ref_u_position + star[1])
cartesian_y = ref_y_position + star[0] * np.sin(
ref_u_position + star[1])
if (3 * star_std < cartesian_x <
len(fits[1].data[0]) - 3 * star_std
and 3 * star_std < cartesian_y <
len(fits[1].data) - 3 * star_std):
in_fov_single.append(1)
else:
in_fov_single.append(0)
in_fov *= in_fov_single
all_stars_dict['in_fov'] = np.array(in_fov)
visible_fov_x_min = np.min(stars[np.where(in_fov),
0]) - 3 * star_std
visible_fov_x_max = np.max(stars[np.where(in_fov),
0]) + 3 * star_std
visible_fov_y_min = np.min(stars[np.where(in_fov),
1]) - 3 * star_std
visible_fov_y_max = np.max(stars[np.where(in_fov),
1]) + 3 * star_std
self.log.set_param('min_x', float(visible_fov_x_min))
self.log.set_param('min_y', float(visible_fov_y_min))
self.log.set_param('max_x', float(visible_fov_x_max))
self.log.set_param('max_y', float(visible_fov_y_max))
plc.save_dict(all_stars_dict, 'all_stars.pickle')
self.log.set_param('alignment_complete', True)
self.log.set_param('alignment_version', self.log.version)
self.log.save_local_log()
self.log.set_param('proceed', True)
self.def_close()
def choose_calibartion_stars(self):
if self.exit:
self.after(self.align)
else:
all_stars_dict = plc.open_dict('all_stars.pickle')
stars = np.array(all_stars_dict['all_stars'])
fits = pf.open(os.path.join(self.log.reduction_directory,
self.science_files[0]),
memmap=False)
metadata = self.all_frames[self.science_files[0]]
frame_mean = metadata[self.log.mean_key]
frame_std = metadata[self.log.std_key]
frame_star_psf = metadata[self.log.psf_key]
bright_stars = []
std_limit = 30
while len(bright_stars) < 100 and std_limit >= 5.0:
bright_stars = []
for star in stars:
if star[2] + star[3] < 2.0 * self.burn_limit / 3.0:
if star[-1] > (2 * np.pi * (std_limit * frame_std) *
frame_star_psf * frame_star_psf):
self.alignment_log(
star[0], star[1], star[-1], 2 * np.pi *
(frame_mean + std_limit * frame_std) *
(frame_star_psf**2))
bright_stars.append(star)
std_limit -= 5
if len(bright_stars) < self.min_calibration_stars_number:
bright_stars = []
std_limit = 30
while len(bright_stars) < 100 and std_limit >= 5.0:
bright_stars = []
for star in stars:
if star[-1] > (2 * np.pi * (std_limit * frame_std) *
frame_star_psf * frame_star_psf):
self.alignment_log(
star[0], star[1], star[-1], 2 * np.pi *
(frame_mean + std_limit * frame_std) *
(frame_star_psf**2))
bright_stars.append(star)
std_limit -= 5
stars = sorted(bright_stars, key=lambda x: -x[-1] / (x[-2]**3))
x_ref_position = stars[0][0]
y_ref_position = stars[0][1]
f_ref = stars[0][-1]
del stars[0]
# take the rest as calibration stars and calculate their polar coordinates relatively to the first
calibration_stars_polar = []
for star in stars:
r_position, u_position = plc.cartesian_to_polar(
star[0], star[1], x_ref_position, y_ref_position)
if r_position > 5 * frame_star_psf:
calibration_stars_polar.append([r_position, u_position])
stars = sorted(stars, key=lambda x: -x[-1])
calibration_stars_polar_snr = []
for star in stars:
r_position, u_position = plc.cartesian_to_polar(
star[0], star[1], x_ref_position, y_ref_position)
if r_position > 5 * frame_star_psf:
calibration_stars_polar_snr.append(
[r_position, u_position])
if len(calibration_stars_polar
) <= self.min_calibration_stars_number:
self.check_num = len(calibration_stars_polar) - 0.5
self.check_num_snr = len(calibration_stars_polar) - 0.5
else:
self.check_num = max(self.min_calibration_stars_number - 0.5,
len(calibration_stars_polar) / 10.0 - 0.5)
self.check_num_snr = max(
self.min_calibration_stars_number - 0.5,
len(calibration_stars_polar) / 20.0 - 0.5)
self.x0 = x_ref_position
self.y0 = y_ref_position
self.u0 = 0
self.f0 = f_ref
self.comparisons = calibration_stars_polar
self.comparisons_snr = calibration_stars_polar_snr
fits.close()
ustep = np.arcsin(
float(frame_star_psf) /
self.comparisons[int(len(self.comparisons) / 2)][0])
self.small_angles = np.append(
np.arange(-self.rotation_tolerance, self.rotation_tolerance,
ustep),
np.arange(-self.rotation_tolerance, self.rotation_tolerance,
ustep) + np.pi)
self.large_angles = np.array([np.pi, 0])
for ff in range(1, int(np.pi / ustep) + 1):
self.large_angles = np.append(self.large_angles,
np.pi - ff * ustep)
self.large_angles = np.append(self.large_angles,
np.pi + ff * ustep)
self.large_angles = np.append(self.large_angles,
0 - ff * ustep)
self.large_angles = np.append(self.large_angles,
0 + ff * ustep)
# set the looking window and angular step
self.progress_all_stars.set(' ')
self.after(self.align)
