Exposure
ID
GRAVI.2025-06-20T07:41:38.886_1
Header ID
GRAVI.2025-06-20T07:41:38.886
Date updated
2025-06-20 07:51:01 UTC+0000
Release date
2026-06-20 07:51:00 UTC+0000
UTC Start
2025-06-20 07:41:38.886
UTC End
2025-06-20 07:44:18.886
MJD Start
60846.32058896
MJD End
60846.322440811855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003781
Ambient temperature (°C)
12.64
Seeing (arcsec)
0.6699999999999999
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 55.7800 55.3790 295.9000 296.5000
K0-D0 76.0630 75.4010 270.5000 270.8000
K0-J3 56.2480 56.2420 354.8540 355.2870
G2-D0 35.1660 35.0070 227.4000 227.6000
G2-J3 55.1050 54.7940 54.9710 55.1090
D0-J3 90.0840 89.6150 52.0330 52.1650
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 60846.32058896
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 55.78
HIERARCH ESO ISS PBL12 END 55.379
HIERARCH ESO ISS PBLA12 START 295.9
HIERARCH ESO ISS PBLA12 END 296.5
HIERARCH ESO ISS PBL13 START 76.063
HIERARCH ESO ISS PBL13 END 75.401
HIERARCH ESO ISS PBLA13 START 270.5
HIERARCH ESO ISS PBLA13 END 270.8
HIERARCH ESO ISS PBL14 START 56.248
HIERARCH ESO ISS PBL14 END 56.242
HIERARCH ESO ISS PBLA14 START 354.854
HIERARCH ESO ISS PBLA14 END 355.287
HIERARCH ESO ISS PBL23 START 35.166
HIERARCH ESO ISS PBL23 END 35.007
HIERARCH ESO ISS PBLA23 START 227.4
HIERARCH ESO ISS PBLA23 END 227.6
HIERARCH ESO ISS PBL24 START 55.105
HIERARCH ESO ISS PBL24 END 54.794
HIERARCH ESO ISS PBLA24 START 54.971
HIERARCH ESO ISS PBLA24 END 55.109
HIERARCH ESO ISS PBL34 START 90.084
HIERARCH ESO ISS PBL34 END 89.615
HIERARCH ESO ISS PBLA34 START 52.033
HIERARCH ESO ISS PBLA34 END 52.165
HIERARCH ESO ISS AMBI TAU0 START 0.003781
HIERARCH ESO ISS AMBI TAU0 END 0.003781
HIERARCH ESO ISS AMBI TEMP 12.64
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.7