Exposure
ID
GRAVI.2025-06-20T03:22:12.544_1
Header ID
GRAVI.2025-06-20T03:22:12.544
Date updated
2025-06-20 03:30:52 UTC+0000
Release date
2026-06-20 03:30:52 UTC+0000
UTC Start
2025-06-20 03:22:12.544
UTC End
2025-06-20 03:24:52.544
MJD Start
60846.14042296
MJD End
60846.14227481186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.005552
Ambient temperature (°C)
13.06
Seeing (arcsec)
0.62
Observation
ID
68166
Category
science
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
50671
Name
X_Sgr
RA
266.890064
DEC
-27.83085
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 65.5500 65.7650 262.7000 263.1000
K0-D0 93.1380 93.3660 241.6000 242.0000
K0-J3 55.4770 55.5460 325.9110 326.1500
G2-D0 39.8040 39.8220 205.1000 205.5000
G2-J3 63.9680 64.0180 32.0320 32.4480
D0-J3 103.5930 103.6600 29.3750 29.7850
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60846.14042296
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890064
DEC -27.83085
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 65.55
HIERARCH ESO ISS PBL12 END 65.765
HIERARCH ESO ISS PBLA12 START 262.7
HIERARCH ESO ISS PBLA12 END 263.1
HIERARCH ESO ISS PBL13 START 93.138
HIERARCH ESO ISS PBL13 END 93.366
HIERARCH ESO ISS PBLA13 START 241.6
HIERARCH ESO ISS PBLA13 END 242.0
HIERARCH ESO ISS PBL14 START 55.477
HIERARCH ESO ISS PBL14 END 55.546
HIERARCH ESO ISS PBLA14 START 325.911
HIERARCH ESO ISS PBLA14 END 326.15
HIERARCH ESO ISS PBL23 START 39.804
HIERARCH ESO ISS PBL23 END 39.822
HIERARCH ESO ISS PBLA23 START 205.1
HIERARCH ESO ISS PBLA23 END 205.5
HIERARCH ESO ISS PBL24 START 63.968
HIERARCH ESO ISS PBL24 END 64.018
HIERARCH ESO ISS PBLA24 START 32.032
HIERARCH ESO ISS PBLA24 END 32.448
HIERARCH ESO ISS PBL34 START 103.593
HIERARCH ESO ISS PBL34 END 103.66
HIERARCH ESO ISS PBLA34 START 29.375
HIERARCH ESO ISS PBLA34 END 29.785
HIERARCH ESO ISS AMBI TAU0 START 0.005745
HIERARCH ESO ISS AMBI TAU0 END 0.005359
HIERARCH ESO ISS AMBI TEMP 13.06
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.63