Exposure
ID
GRAVI.2025-05-23T08:18:52.195_1
Header ID
GRAVI.2025-05-23T08:18:52.195
Date updated
2025-05-23 08:31:51 UTC+0000
Release date
2025-05-23 08:18:52 UTC+0000
UTC Start
2025-05-23 08:18:52.195
UTC End
2025-05-23 08:21:32.195
MJD Start
60818.34643744
MJD End
60818.348289291855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0040975000000000004
Ambient temperature (°C)
13.49
Seeing (arcsec)
0.515
Observation
ID
67547
Category
calibrator
Program ID
115.282E.001
Program Title
CIRCUMSTELLAR ENVELOPES OF NEARBY CEPHEIDS WITH GRAVITY TO REFINE THE PERIOD-LUMINOSITY RELATION IN THE JWST ERA
Program Type
Normal
PI / COI
HOCDÉ / NARDETTO / GALLENNE / KERVELLA / PIETRZYNSKI / GIEREN / MÉRAND / BRAS / BAILLEUL / LEFTLEY / AFANASIEV
Target
ID
50237
Name
HD156227
RA
259.178058
DEC
-6.24502
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 55.1690 54.6500 276.4000 276.6000
K0-D0 84.4270 83.8580 253.8000 253.8000
K0-J3 49.7500 49.6920 350.1450 350.6180
G2-D0 39.6340 39.5880 221.5000 221.5000
G2-J3 63.0930 62.9640 47.2250 47.1970
D0-J3 102.6060 102.4320 45.0170 45.0000
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60818.34643744
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 156227
HIERARCH ESO INS SOBJ NAME HD156227
RA 259.178058
DEC -6.24502
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 55.169
HIERARCH ESO ISS PBL12 END 54.65
HIERARCH ESO ISS PBLA12 START 276.4
HIERARCH ESO ISS PBLA12 END 276.6
HIERARCH ESO ISS PBL13 START 84.427
HIERARCH ESO ISS PBL13 END 83.858
HIERARCH ESO ISS PBLA13 START 253.8
HIERARCH ESO ISS PBLA13 END 253.8
HIERARCH ESO ISS PBL14 START 49.75
HIERARCH ESO ISS PBL14 END 49.692
HIERARCH ESO ISS PBLA14 START 350.145
HIERARCH ESO ISS PBLA14 END 350.618
HIERARCH ESO ISS PBL23 START 39.634
HIERARCH ESO ISS PBL23 END 39.588
HIERARCH ESO ISS PBLA23 START 221.5
HIERARCH ESO ISS PBLA23 END 221.5
HIERARCH ESO ISS PBL24 START 63.093
HIERARCH ESO ISS PBL24 END 62.964
HIERARCH ESO ISS PBLA24 START 47.225
HIERARCH ESO ISS PBLA24 END 47.197
HIERARCH ESO ISS PBL34 START 102.606
HIERARCH ESO ISS PBL34 END 102.432
HIERARCH ESO ISS PBLA34 START 45.017
HIERARCH ESO ISS PBLA34 END 45.0
HIERARCH ESO ISS AMBI TAU0 START 0.004049
HIERARCH ESO ISS AMBI TAU0 END 0.004146
HIERARCH ESO ISS AMBI TEMP 13.49
HIERARCH ESO ISS AMBI FWHM START 0.51
HIERARCH ESO ISS AMBI FWHM END 0.52