Exposure
ID
GRAVI.2025-06-22T03:37:48.921_1
Header ID
GRAVI.2025-06-22T03:37:48.921
Date updated
2025-06-22 03:50:47 UTC+0000
Release date
2026-06-22 03:50:47 UTC+0000
UTC Start
2025-06-22 03:37:48.921
UTC End
2025-06-22 03:40:28.921
MJD Start
60848.15126066
MJD End
60848.153112511856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0027215
Ambient temperature (°C)
12.19
Seeing (arcsec)
0.645
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 67.0270 67.1750 265.6000 266.0000
K0-D0 94.7060 94.8620 244.8000 245.2000
K0-J3 55.9550 56.0040 327.9010 328.1690
G2-D0 39.9270 39.9380 208.2000 208.6000
G2-J3 64.3050 64.3380 35.2310 35.6200
D0-J3 104.0470 104.0900 32.5380 32.9230
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 60848.15126066
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 67.027
HIERARCH ESO ISS PBL12 END 67.175
HIERARCH ESO ISS PBLA12 START 265.6
HIERARCH ESO ISS PBLA12 END 266.0
HIERARCH ESO ISS PBL13 START 94.706
HIERARCH ESO ISS PBL13 END 94.862
HIERARCH ESO ISS PBLA13 START 244.8
HIERARCH ESO ISS PBLA13 END 245.2
HIERARCH ESO ISS PBL14 START 55.955
HIERARCH ESO ISS PBL14 END 56.004
HIERARCH ESO ISS PBLA14 START 327.901
HIERARCH ESO ISS PBLA14 END 328.169
HIERARCH ESO ISS PBL23 START 39.927
HIERARCH ESO ISS PBL23 END 39.938
HIERARCH ESO ISS PBLA23 START 208.2
HIERARCH ESO ISS PBLA23 END 208.6
HIERARCH ESO ISS PBL24 START 64.305
HIERARCH ESO ISS PBL24 END 64.338
HIERARCH ESO ISS PBLA24 START 35.231
HIERARCH ESO ISS PBLA24 END 35.62
HIERARCH ESO ISS PBL34 START 104.047
HIERARCH ESO ISS PBL34 END 104.09
HIERARCH ESO ISS PBLA34 START 32.538
HIERARCH ESO ISS PBLA34 END 32.923
HIERARCH ESO ISS AMBI TAU0 START 0.002406
HIERARCH ESO ISS AMBI TAU0 END 0.003037
HIERARCH ESO ISS AMBI TEMP 12.19
HIERARCH ESO ISS AMBI FWHM START 0.67
HIERARCH ESO ISS AMBI FWHM END 0.62