Exposure
ID
GRAVI.2025-06-23T07:25:08.234_1
Header ID
GRAVI.2025-06-23T07:25:08.234
Date updated
2025-06-23 07:36:05 UTC+0000
Release date
2026-06-23 07:36:05 UTC+0000
UTC Start
2025-06-23 07:25:08.234
UTC End
2025-06-23 07:27:48.234
MJD Start
60849.30912308
MJD End
60849.310974931854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0038805
Ambient temperature (°C)
9.55
Seeing (arcsec)
0.555
Observation
ID
68175
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
50678
Name
W_Sgr
RA
271.255137
DEC
-29.58012
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 56.4100 56.0130 295.0000 295.6000
K0-D0 77.0970 76.4470 269.9000 270.2000
K0-J3 56.2580 56.2520 354.1660 354.6000
G2-D0 35.4130 35.2580 227.2000 227.4000
G2-J3 55.5890 55.2850 54.7420 54.8880
D0-J3 90.8150 90.3560 51.8150 51.9540
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 60849.30912308
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME gam01 Sgr
HIERARCH ESO INS SOBJ NAME W_Sgr
RA 271.255137
DEC -29.58012
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 56.41
HIERARCH ESO ISS PBL12 END 56.013
HIERARCH ESO ISS PBLA12 START 295.0
HIERARCH ESO ISS PBLA12 END 295.6
HIERARCH ESO ISS PBL13 START 77.097
HIERARCH ESO ISS PBL13 END 76.447
HIERARCH ESO ISS PBLA13 START 269.9
HIERARCH ESO ISS PBLA13 END 270.2
HIERARCH ESO ISS PBL14 START 56.258
HIERARCH ESO ISS PBL14 END 56.252
HIERARCH ESO ISS PBLA14 START 354.166
HIERARCH ESO ISS PBLA14 END 354.6
HIERARCH ESO ISS PBL23 START 35.413
HIERARCH ESO ISS PBL23 END 35.258
HIERARCH ESO ISS PBLA23 START 227.2
HIERARCH ESO ISS PBLA23 END 227.4
HIERARCH ESO ISS PBL24 START 55.589
HIERARCH ESO ISS PBL24 END 55.285
HIERARCH ESO ISS PBLA24 START 54.742
HIERARCH ESO ISS PBLA24 END 54.888
HIERARCH ESO ISS PBL34 START 90.815
HIERARCH ESO ISS PBL34 END 90.356
HIERARCH ESO ISS PBLA34 START 51.815
HIERARCH ESO ISS PBLA34 END 51.954
HIERARCH ESO ISS AMBI TAU0 START 0.004063
HIERARCH ESO ISS AMBI TAU0 END 0.003698
HIERARCH ESO ISS AMBI TEMP 9.55
HIERARCH ESO ISS AMBI FWHM START 0.56
HIERARCH ESO ISS AMBI FWHM END 0.55