Exposure
ID
GRAVI.2025-06-20T03:29:09.562_1
Header ID
GRAVI.2025-06-20T03:29:09.562
Date updated
2025-06-20 03:40:44 UTC+0000
Release date
2026-06-20 03:40:44 UTC+0000
UTC Start
2025-06-20 03:29:09.562
UTC End
2025-06-20 03:31:49.562
MJD Start
60846.14524956
MJD End
60846.14710141186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0046905
Ambient temperature (°C)
13.15
Seeing (arcsec)
0.69
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 66.0430 66.2390 263.6000 264.0000
K0-D0 93.6620 93.8690 242.6000 243.0000
K0-J3 55.6360 55.6990 326.4800 326.7260
G2-D0 39.8460 39.8620 206.0000 206.4000
G2-J3 64.0820 64.1270 33.0050 33.4120
D0-J3 103.7460 103.8070 30.3360 30.7380
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 60846.14524956
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 66.043
HIERARCH ESO ISS PBL12 END 66.239
HIERARCH ESO ISS PBLA12 START 263.6
HIERARCH ESO ISS PBLA12 END 264.0
HIERARCH ESO ISS PBL13 START 93.662
HIERARCH ESO ISS PBL13 END 93.869
HIERARCH ESO ISS PBLA13 START 242.6
HIERARCH ESO ISS PBLA13 END 243.0
HIERARCH ESO ISS PBL14 START 55.636
HIERARCH ESO ISS PBL14 END 55.699
HIERARCH ESO ISS PBLA14 START 326.48
HIERARCH ESO ISS PBLA14 END 326.726
HIERARCH ESO ISS PBL23 START 39.846
HIERARCH ESO ISS PBL23 END 39.862
HIERARCH ESO ISS PBLA23 START 206.0
HIERARCH ESO ISS PBLA23 END 206.4
HIERARCH ESO ISS PBL24 START 64.082
HIERARCH ESO ISS PBL24 END 64.127
HIERARCH ESO ISS PBLA24 START 33.005
HIERARCH ESO ISS PBLA24 END 33.412
HIERARCH ESO ISS PBL34 START 103.746
HIERARCH ESO ISS PBL34 END 103.807
HIERARCH ESO ISS PBLA34 START 30.336
HIERARCH ESO ISS PBLA34 END 30.738
HIERARCH ESO ISS AMBI TAU0 START 0.004511
HIERARCH ESO ISS AMBI TAU0 END 0.00487
HIERARCH ESO ISS AMBI TEMP 13.15
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.7