Exposure
ID
GRAVI.2025-08-14T02:15:36.448_1
Header ID
GRAVI.2025-08-14T02:15:36.448
Date updated
2025-08-14 02:25:48 UTC+0000
Release date
2025-08-14 02:15:36 UTC+0000
UTC Start
2025-08-14 02:15:36.448
UTC End
2025-08-14 02:18:16.448
MJD Start
60901.09417185
MJD End
60901.09602370186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0063479999999999995
Ambient temperature (°C)
14.28
Seeing (arcsec)
0.735
Observation
ID
69982
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
51924
Name
HD156227
RA
259.176937
DEC
-6.24502
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 118.4750 118.1150 243.4000 243.4000
K0-D0 90.4370 90.0320 253.9000 254.0000
K0-J3 50.6690 50.5830 344.4690 344.9050
B2-D0 33.8970 33.9070 34.1000 34.2000
B2-J3 137.5200 137.4680 42.1920 42.2500
D0-J3 104.0680 104.0000 44.8140 44.8580
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 60901.09417185
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 156227
HIERARCH ESO INS SOBJ NAME HD156227
RA 259.176937
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 B2
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 118.475
HIERARCH ESO ISS PBL12 END 118.115
HIERARCH ESO ISS PBLA12 START 243.4
HIERARCH ESO ISS PBLA12 END 243.4
HIERARCH ESO ISS PBL13 START 90.437
HIERARCH ESO ISS PBL13 END 90.032
HIERARCH ESO ISS PBLA13 START 253.9
HIERARCH ESO ISS PBLA13 END 254.0
HIERARCH ESO ISS PBL14 START 50.669
HIERARCH ESO ISS PBL14 END 50.583
HIERARCH ESO ISS PBLA14 START 344.469
HIERARCH ESO ISS PBLA14 END 344.905
HIERARCH ESO ISS PBL23 START 33.897
HIERARCH ESO ISS PBL23 END 33.907
HIERARCH ESO ISS PBLA23 START 34.1
HIERARCH ESO ISS PBLA23 END 34.2
HIERARCH ESO ISS PBL24 START 137.52
HIERARCH ESO ISS PBL24 END 137.468
HIERARCH ESO ISS PBLA24 START 42.192
HIERARCH ESO ISS PBLA24 END 42.25
HIERARCH ESO ISS PBL34 START 104.068
HIERARCH ESO ISS PBL34 END 104.0
HIERARCH ESO ISS PBLA34 START 44.814
HIERARCH ESO ISS PBLA34 END 44.858
HIERARCH ESO ISS AMBI TAU0 START 0.006261
HIERARCH ESO ISS AMBI TAU0 END 0.006435
HIERARCH ESO ISS AMBI TEMP 14.28
HIERARCH ESO ISS AMBI FWHM START 0.82
HIERARCH ESO ISS AMBI FWHM END 0.65