Exposure
ID
GRAVI.2025-06-23T07:31:50.252_1
Header ID
GRAVI.2025-06-23T07:31:50.252
Date updated
2025-06-23 07:40:53 UTC+0000
Release date
2026-06-23 07:40:53 UTC+0000
UTC Start
2025-06-23 07:31:50.252
UTC End
2025-06-23 07:34:30.252
MJD Start
60849.31377606
MJD End
60849.315627911856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003985
Ambient temperature (°C)
9.44
Seeing (arcsec)
0.53
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 55.5080 55.1030 296.3000 296.9000
K0-D0 75.6150 74.9440 270.7000 271.1000
K0-J3 56.2440 56.2390 355.1480 355.5840
G2-D0 35.0580 34.8970 227.5000 227.6000
G2-J3 54.8950 54.5790 55.0650 55.2020
D0-J3 89.7670 89.2900 52.1230 52.2540
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 60849.31377606
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 55.508
HIERARCH ESO ISS PBL12 END 55.103
HIERARCH ESO ISS PBLA12 START 296.3
HIERARCH ESO ISS PBLA12 END 296.9
HIERARCH ESO ISS PBL13 START 75.615
HIERARCH ESO ISS PBL13 END 74.944
HIERARCH ESO ISS PBLA13 START 270.7
HIERARCH ESO ISS PBLA13 END 271.1
HIERARCH ESO ISS PBL14 START 56.244
HIERARCH ESO ISS PBL14 END 56.239
HIERARCH ESO ISS PBLA14 START 355.148
HIERARCH ESO ISS PBLA14 END 355.584
HIERARCH ESO ISS PBL23 START 35.058
HIERARCH ESO ISS PBL23 END 34.897
HIERARCH ESO ISS PBLA23 START 227.5
HIERARCH ESO ISS PBLA23 END 227.6
HIERARCH ESO ISS PBL24 START 54.895
HIERARCH ESO ISS PBL24 END 54.579
HIERARCH ESO ISS PBLA24 START 55.065
HIERARCH ESO ISS PBLA24 END 55.202
HIERARCH ESO ISS PBL34 START 89.767
HIERARCH ESO ISS PBL34 END 89.29
HIERARCH ESO ISS PBLA34 START 52.123
HIERARCH ESO ISS PBLA34 END 52.254
HIERARCH ESO ISS AMBI TAU0 START 0.00337
HIERARCH ESO ISS AMBI TAU0 END 0.0046
HIERARCH ESO ISS AMBI TEMP 9.44
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.54