Exposure
ID
GRAVI.2025-07-14T05:39:55.294_1
Header ID
GRAVI.2025-07-14T05:39:55.294
Date updated
2025-07-14 05:50:53 UTC+0000
Release date
2026-07-14 05:50:53 UTC+0000
UTC Start
2025-07-14 05:39:55.294
UTC End
2025-07-14 05:42:35.294
MJD Start
60870.23605664
MJD End
60870.23790849186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
12.92
Seeing (arcsec)
1.31
Observation
ID
68755
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
51158
Name
X_Sgr
RA
266.88755
DEC
-27.83085
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 81.0500 80.7530 140.0000 140.6000
A0-J2 107.3940 106.6390 114.5000 115.0000
A0-C1 20.2600 20.1850 140.0030 140.6040
G1-J2 48.9020 48.5610 68.9000 69.1000
G1-C1 60.7900 60.5670 319.9880 320.5870
J2-C1 89.5350 88.8630 288.8880 289.3840
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 60870.23605664
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.88755
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 81.05
HIERARCH ESO ISS PBL12 END 80.753
HIERARCH ESO ISS PBLA12 START 140.0
HIERARCH ESO ISS PBLA12 END 140.6
HIERARCH ESO ISS PBL13 START 107.394
HIERARCH ESO ISS PBL13 END 106.639
HIERARCH ESO ISS PBLA13 START 114.5
HIERARCH ESO ISS PBLA13 END 115.0
HIERARCH ESO ISS PBL14 START 20.26
HIERARCH ESO ISS PBL14 END 20.185
HIERARCH ESO ISS PBLA14 START 140.003
HIERARCH ESO ISS PBLA14 END 140.604
HIERARCH ESO ISS PBL23 START 48.902
HIERARCH ESO ISS PBL23 END 48.561
HIERARCH ESO ISS PBLA23 START 68.9
HIERARCH ESO ISS PBLA23 END 69.1
HIERARCH ESO ISS PBL24 START 60.79
HIERARCH ESO ISS PBL24 END 60.567
HIERARCH ESO ISS PBLA24 START 319.988
HIERARCH ESO ISS PBLA24 END 320.587
HIERARCH ESO ISS PBL34 START 89.535
HIERARCH ESO ISS PBL34 END 88.863
HIERARCH ESO ISS PBLA34 START 288.888
HIERARCH ESO ISS PBLA34 END 289.384
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 12.92
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31