Exposure
ID
GRAVI.2025-05-22T05:57:17.022_1
Header ID
GRAVI.2025-05-22T05:57:17.022
Date updated
2025-05-22 06:06:00 UTC+0000
Release date
2026-05-22 06:06:00 UTC+0000
UTC Start
2025-05-22 05:57:17.022
UTC End
2025-05-22 05:59:57.022
MJD Start
60817.24811368
MJD End
60817.24996553185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.010563
Ambient temperature (°C)
14.57
Seeing (arcsec)
0.38
Observation
ID
67519
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
50218
Name
X_Sgr
RA
266.890065
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 67.7810 67.8770 267.7000 268.1000
K0-D0 95.4910 95.5880 247.1000 247.5000
K0-J3 56.2130 56.2480 329.5300 329.8150
G2-D0 39.9780 39.9820 210.4000 210.7000
G2-J3 64.4590 64.4750 37.4780 37.8440
D0-J3 104.2480 104.2680 34.7670 35.1290
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 60817.24811368
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890065
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 67.781
HIERARCH ESO ISS PBL12 END 67.877
HIERARCH ESO ISS PBLA12 START 267.7
HIERARCH ESO ISS PBLA12 END 268.1
HIERARCH ESO ISS PBL13 START 95.491
HIERARCH ESO ISS PBL13 END 95.588
HIERARCH ESO ISS PBLA13 START 247.1
HIERARCH ESO ISS PBLA13 END 247.5
HIERARCH ESO ISS PBL14 START 56.213
HIERARCH ESO ISS PBL14 END 56.248
HIERARCH ESO ISS PBLA14 START 329.53
HIERARCH ESO ISS PBLA14 END 329.815
HIERARCH ESO ISS PBL23 START 39.978
HIERARCH ESO ISS PBL23 END 39.982
HIERARCH ESO ISS PBLA23 START 210.4
HIERARCH ESO ISS PBLA23 END 210.7
HIERARCH ESO ISS PBL24 START 64.459
HIERARCH ESO ISS PBL24 END 64.475
HIERARCH ESO ISS PBLA24 START 37.478
HIERARCH ESO ISS PBLA24 END 37.844
HIERARCH ESO ISS PBL34 START 104.248
HIERARCH ESO ISS PBL34 END 104.268
HIERARCH ESO ISS PBLA34 START 34.767
HIERARCH ESO ISS PBLA34 END 35.129
HIERARCH ESO ISS AMBI TAU0 START 0.010271
HIERARCH ESO ISS AMBI TAU0 END 0.010855
HIERARCH ESO ISS AMBI TEMP 14.57
HIERARCH ESO ISS AMBI FWHM START 0.41
HIERARCH ESO ISS AMBI FWHM END 0.35