def test_constellations():
lookup = load_constellation_map()
assert lookup(position_of_radec(0, 0)) == 'Psc'
assert lookup(position_of_radec(360, 90)) == 'UMi'
# (4.65, 0) used to be in Orion, but, precession
assert lookup(position_of_radec(4.65, 0)) == 'Eri'
assert lookup(position_of_radec(4.75, 0.3)) == 'Ori'
# Test vectorization.
assert list(lookup(position_of_radec([4.65, 4.75],
[0, 0.3]))) == ['Eri', 'Ori']
def test_constellations():
ts = load.timescale(builtin=True)
t = ts.utc(2000)
lookup = load_constellation_map()
assert lookup(position_of_radec(0, 0)) == 'Psc'
assert lookup(position_of_radec(360, 90)) == 'UMi'
# (4.65, 0) used to be in Orion, but, precession
assert lookup(position_of_radec(4.65, 0)) == 'Eri'
assert lookup(position_of_radec(4.75, 0.3)) == 'Ori'
# Test vectorization.
assert (lookup(position_of_radec([4.65, 4.75],
[0, 0.3])) == ['Eri', 'Ori']).all()
def test_constellations():
lookup = load_constellation_map()
assert lookup(position_of_radec(0, 0)) == 'Psc'
assert lookup(position_of_radec(360, 90)) == 'UMi'
# (4.65, 0) used to be in Orion, but, precession
assert lookup(position_of_radec(4.65, 0)) == 'Eri'
assert lookup(position_of_radec(4.75, 0.3)) == 'Ori'
# exploit extend() bug, issue 547
B1875 = Time(None, julian_date_of_besselian_epoch(1875))
assert lookup(position_of_radec(18.1747, 39., epoch=B1875)) == 'Her'
assert lookup(position_of_radec(18.1753, 39., epoch=B1875)) == 'Lyr'
# Test vectorization.
assert list(
lookup(position_of_radec([4.65, 4.75], [0, 0.3]))
) == ['Eri', 'Ori']
def import_bright_stars_bsc5_json_all(filename):
constell_dict = {}
constell_lookup = load_constellation_map()
for co in Constellation.query.all():
constell_dict[co.iau_code] = co.id
star_cnt = 0
try:
with open(filename) as f:
all_recs = json.load(f)
for json_rec in all_recs:
star_cnt += 1
_parse_bsc5_json_rec(json_rec, star_cnt, len(all_recs),
constell_dict, constell_lookup)
print('')
db.session.commit()
except IntegrityError as err:
print('\nIntegrity error {}'.format(err))
db.session.rollback()
def fix_dso_constellation():
constell_dict = {}
constellation_at = load_constellation_map()
for co in Constellation.query.all():
constell_dict[co.iau_code.upper()] = co.id
try:
for dso in DeepskyObject.query.all():
const_code = constellation_at(
position_from_radec(dso.ra / np.pi * 12.0,
dso.dec / np.pi * 180.0))
dso.constellation_id = constell_dict[
const_code.upper()] if const_code else None
db.session.add(dso)
db.session.commit()
except KeyError as err:
print('\nKey error: {}'.format(err))
db.session.rollback()
except IntegrityError as err:
print('\nIntegrity error {}'.format(err))
db.session.rollback()
print('')
dt = datetime.datetime(int(year),
int(month),
int(date),
int(hour),
int(mins),
tzinfo=tz)
t1 = dt.astimezone(pytz.utc)
ts = api.load.timescale()
y, m, d, h, mns = t1.year, t1.month, t1.date, t1.hour, t1.minute
t = ts.utc(y, m, h, mns)
topos = api.Topos(latitude_degrees=lat, longitude_degrees=lon)
observer = topos.at(t)
pos = observer.from_altaz(alt_degrees=alt, az_degrees=azi)
ra, dec, distance = pos.radec()
constellation_at = load_constellation_map()
coord = position_of_radec(ra.hours, dec.degrees)
print(constellation_at(coord))
print("RA = ", ra)
print("Dec = ", dec)
t2 = (2020, 11, 14, 22, 00)
topos = api.Topos(latitude_degrees=31.77,
longitude_degrees=76.98) #coordinates of iit mandi
observer = topos.at(t)
pos = observer.from_altaz(alt_degrees=90, az_degrees=0)
ra, dec, distance = pos.radec()
constellation_at = load_constellation_map()
coord = position_of_radec(ra.hours, dec.degrees)
print("Constellation right above Lucy: ", constellation_at(coord))
def import_hnsky(hnsky_dso_file):
from sqlalchemy.exc import IntegrityError
constellation_at = load_constellation_map()
constell_dict = {}
for co in Constellation.query.all():
constell_dict[co.iau_code.upper()] = co.id
hnd_file = open(hnsky_dso_file, 'r', encoding='ISO-8859-1')
lines = hnd_file.readlines()[2:]
hnd_file.close()
existing_dsos = {}
for dso in DeepskyObject.query.filter_by().all():
existing_dsos[dso.name] = dso
dso_set = set()
master_dso_map = {}
pref_cats = [None] * 1000
cat_codes = {}
catalogs = Catalogue.query.filter(Catalogue.id<1000).order_by(Catalogue.id)
for cat in catalogs:
pref_cats[cat.id-1] = []
cat_codes[cat.id-1] = cat.code
dso_count = 0
other_dsos = []
try:
for line in lines:
if len(line) == 0:
continue
items = line.split(',')
ra = 2.0 * np.pi * float(items[0])/864000.0
dec = np.pi * float(items[1])/(324000.0 * 2.0)
const_code = constellation_at(position_from_radec(ra / np.pi * 12.0, dec / np.pi * 180.0))
constellation_id = constell_dict[const_code.upper()] if const_code else None
str_mag = items[2].strip()
mag = float(str_mag)/10.0 if str_mag else 100.0
brightness = None
if len(items) > 5:
str_brightness = items[5].strip()
try:
brightness = float(str_brightness)/10.0 if str_brightness else 100.0
except (ValueError, TypeError):
pass
obj_types = items[4].split('/')
obj_type = obj_types[0].strip()
indx = obj_types[0].find('[')
if indx>0:
obj_type = obj_type[:indx]
indx = obj_types[0].find(';')
if indx>0:
obj_type = obj_type[:indx]
indx1 = items[4].find('[')
indx2 = items[4].find(']')
obj_subtype = items[4][indx1+1:indx2] if indx1<indx2 else None
# remove uncertainty flag
if obj_type.endswith('?') and len(obj_type) > 1:
obj_type = obj_type[:-1]
obj_type = dso_type_map.get(obj_type, None)
if obj_type is None:
print('No type {}'.format(obj_types[0].strip()))
print(line)
continue
rlong = None
str_length = items[6].strip() if len(items) > 6 else None
if str_length:
try:
rlong = float(str_length) * 6
except (ValueError, TypeError):
pass
rshort = None
str_width = items[7].strip() if len(items) > 7 else None
if str_width:
try:
rshort = float(str_width) * 6
except (ValueError, TypeError):
pass
position_angle = None
str_pos_angle = items[8].strip() if len(items) > 8 else None
if str_pos_angle:
try:
position_angle = float(str_pos_angle)
except (ValueError, TypeError):
pass
names = items[3].split('/')
master_dso = None
child_dsos = []
master_cat_prio = None
for name1 in names:
for name in name1.split(';'):
name = name.strip()
if name.startswith('PN_'):
name = name[3:]
if name.startswith('A66_'):
name = 'Abell' + name[4:]
if name.startswith('PK_'):
name = 'PK' + _denormalize_pk_name(name[3:])
if name.startswith('Arp_'):
name = 'Arp' + name[4:]
if name.startswith('NGC') or name.startswith('IC') or name.startswith('UGC'):
if name.endswith('A'):
name = name[:-1]
elif name.endswith('-1') or name.endswith('_1'):
name = name[:-2]
if name in dso_set:
continue
dso_set.add(name)
cat = get_catalog_from_dsoname(name)
if cat:
dso = existing_dsos.get(name, None)
if dso is None:
dso = DeepskyObject()
dso.name = name
dso.type = obj_type
dso.subtype = obj_subtype
dso.ra = ra
dso.dec = dec
dso.constellation_id = constellation_id
dso.catalogue_id = cat.id
dso.major_axis = rlong
dso.minor_axis = rshort
dso.position_angle = position_angle
dso.mag = mag
dso.surface_bright = brightness
dso.common_name = None
cat_prio = cat_priorities.get(cat.code, 1000)
if (master_cat_prio is not None) and cat_prio < master_cat_prio:
child_dsos.append(master_dso)
master_dso = dso
master_cat_prio = cat_prio
elif master_dso:
child_dsos.append(dso)
else:
master_dso = dso
master_cat_prio = cat_prio
if cat.id < 1000:
pref_cats[cat.id-1].append(dso)
else:
other_dsos.append(dso)
dso_count += 1
else:
print('Not found {}'.format(name))
for child_dso in child_dsos:
master_dso_map[child_dso.name] = master_dso
# Sort dso in catalog list according object number in catalog
for i in range(1000):
dso_list = pref_cats[i]
if not dso_list or i not in cat_codes:
continue
ccl = len(cat_codes[i])
if cat_codes[i] in { 'Sh2' }: # skip '-' character in case of Sh2 object ID
ccl += 1
pos = int(log(len(dso_list), 10)) + 1
# add 0 before dso ID (in catalog)
dso_list.sort(key=lambda x: (('0' * (pos - (len(x.name) - ccl))) + x.name[ccl:]) if len(x.name) - ccl < pos else x.name[ccl:])
line_cnt = 1
# Import master DSO from preferred catalogs
for i in range(1000):
dso_list = pref_cats[i]
if dso_list and i in cat_codes:
line_cnt = _save_dso_list(dso_count, line_cnt, dso_list, master_dso_map, True)
# Import child DSO from preferred catalogs
line_cnt = _save_dso_list(dso_count, line_cnt, other_dsos, master_dso_map, True)
for i in range(1000):
dso_list = pref_cats[i]
if dso_list and i in cat_codes:
line_cnt = _save_dso_list(dso_count, line_cnt, dso_list, master_dso_map, False)
line_cnt = _save_dso_list(dso_count, line_cnt, other_dsos, master_dso_map, False)
db.session.commit()
except KeyError as err:
print('\nKey error: {}'.format(err))
db.session.rollback()
except IntegrityError as err:
print('\nIntegrity error {}'.format(err))
db.session.rollback()
print('') # finish on new line
def import_carbon_stars(carbon_stars_data_file):
sf = open(carbon_stars_data_file, 'r')
lines = sf.readlines()
sf.close()
constellation_at = load_constellation_map()
constell_dict = {}
for co in Constellation.query.all():
constell_dict[co.iau_code] = co.id
try:
editor_user = User.get_editor_user()
star_list = StarList.query.filter_by(name='carbon-stars').first()
if star_list:
star_list.name = 'carbon-stars'
star_list.long_name = 'Carbon Stars'
star_list.update_by = editor_user.id
star_list.create_date = datetime.now()
star_list.star_list_items[:] = []
star_list.star_list_descriptions[:] = []
else:
star_list = StarList(name='carbon-stars',
long_name='Carbon Stars',
create_by=editor_user.id,
update_by=editor_user.id,
create_date=datetime.now(),
update_date=datetime.now())
db.session.add(star_list)
db.session.flush()
base_name = os.path.basename(carbon_stars_data_file)
descr_list = _load_descriptions(
os.path.dirname(carbon_stars_data_file), base_name[:-len('.txt')],
star_list, editor_user)
for descr in descr_list:
db.session.add(descr)
db.session.flush()
row_count = len(lines)
row_id = 0
for line in lines:
row_id += 1
progress(row_id, row_count, 'Importing carbon stars catalog')
str_hd = line[0:7].strip()
hd = int(str_hd) if str_hd else None
var_id = line[7:17].strip()
ra = int(line[17:23].strip()) * np.pi / 12.0 + int(
line[23:26].strip()) * np.pi / (12.0 * 60.0) + float(
line[26:31].strip()) * np.pi / (12 * 60.0 * 60)
dec = int(line[34:35] + '1') * (
int(line[35:37].strip()) * np.pi / 180.0 +
int(line[38:40].strip()) * np.pi /
(180.0 * 60.0) + int(line[41:43].strip()) * np.pi /
(180.0 * 60.0 * 60.0))
mag = float(line[43:50].strip())
sp_type = line[50:69].strip()
max_min = line[69:82].strip()
min = None
max = None
if max_min:
sep_index = max_min.find('-')
if sep_index >= 0:
min = float(max_min[0:sep_index])
max = float(max_min[sep_index + 1:])
star = None
if hd is not None:
star = Star.query.filter_by(hd=hd).first()
if not star and var_id:
star = Star.query.filter_by(var_id=var_id).first()
if not star:
star = Star()
star.src_catalogue = 'carbon_stars'
constellation = constellation_at(
position_from_radec(ra / np.pi * 12.0, dec / np.pi * 180.0))
star.hd = hd
star.var_id = var_id
star.ra = ra
star.dec = dec
star.mag = mag
star.mag_max = max
star.mag_min = min
star.constellation_id = constell_dict[
constellation] if constellation else None
if sp_type:
star.sp_type = sp_type
db.session.add(star)
db.session.flush()
item = StarListItem.query.filter_by(star_list_id=star_list.id,
star_id=star.id).first()
if not item:
item = StarListItem(
star_list_id=star_list.id,
star_id=star.id,
item_id=row_id,
create_by=editor_user.id,
create_date=datetime.now(),
)
db.session.add(item)
db.session.commit()
except KeyError as err:
print('\nKey error: {}'.format(err))
db.session.rollback()
except IntegrityError as err:
print('\nIntegrity error {}'.format(err))
db.session.rollback()
print('') # finish on new line
def import_vic(vic_data_file):
"""Import data from VIC catalog."""
from sqlalchemy.exc import IntegrityError
constellation_at = load_constellation_map()
constell_dict = {}
for co in Constellation.query.all():
constell_dict[co.iau_code] = co.id
row_count = sum(1 for line in open(vic_data_file)) - 1
with open(vic_data_file) as csvfile:
reader = csv.DictReader(csvfile, delimiter=';')
catalogue_id = Catalogue.get_catalogue_id_by_cat_code('VIC')
row_id = 0
try:
for row in reader:
row_id += 1
progress(row_id, row_count, 'Importing VIC catalogue')
dso_name = 'VIC' + str(row_id)
c = DeepskyObject.query.filter_by(name = dso_name).first()
if c is None:
c = DeepskyObject()
ra_ang = Angle(hours=tuple(map(float, row['RA'].split(',')))) if len(row['RA']) > 0 else None
dec_ang = Angle(degrees=tuple(map(float, row['Dec'].split(',')))) if len(row['Dec']) > 0 else None
constellation = constellation_at(position_from_radec(ra_ang.radians / np.pi * 12.0, dec_ang.radians / np.pi * 180.0))
c.name = dso_name
c.type = 'AST'
c.ra = ra_ang.radians if ra_ang else None
c.dec = dec_ang.radians if dec_ang else None
c.constellation_id = constell_dict[constellation] if constellation else None
c.catalogue_id = catalogue_id
c.major_axis = vic2int(row['length']) / 10 * 60.0
c.minor_axis = vic2int(row['width']) / 10 * 60.0
c.position_angle = vic2int(row['orient']) / 10
c.mag = vic2int(row['mag']) / 10
c.surface_bright = vic2int(row['brightness']) / 10
c.hubble_type = None
c.c_star_u_mag = None
c.c_star_b_mag = None
c.c_star_v_mag = None
c.identifiers = None
c.common_name = row['name'].strip()
c.descr = None
db.session.add(c)
db.session.commit()
except KeyError as err:
print('\nKey error: {}'.format(err))
db.session.rollback()
except IntegrityError as err:
print('\nIntegrity error {}'.format(err))
db.session.rollback()
print('') # finish on new line
def pos_to_constellation(pos):
constellation_at = api.load_constellation_map()
return constellation_at(pos)
