Exposure
ID
GRAVI.2025-08-28T00:23:28.504_1
Header ID
GRAVI.2025-08-28T00:23:28.504
Date updated
2025-08-28 00:35:55 UTC+0000
Release date
2026-08-28 00:35:55 UTC+0000
UTC Start
2025-08-28 00:23:28.504
UTC End
2025-08-28 00:27:28.504
MJD Start
60915.01630213
MJD End
60915.01907990778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0034405
Ambient temperature (°C)
12.48
Seeing (arcsec)
1.2
Observation
ID
70094
Category
science
Program ID
115.282E.002
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
52007
Name
U_Sgr
RA
277.971025
DEC
-19.12511
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 48.6320 48.6160 149.0000 149.4000
A0-J2 128.5800 128.7890 90.7000 91.1000
A0-J6 168.2420 168.3950 23.4470 23.9180
B5-J2 111.0360 111.2610 68.8000 69.2000
B5-J6 200.4900 200.5770 12.0720 12.5390
J2-J6 167.7220 167.6600 338.4430 338.8500
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60915.01630213
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V U Sgr
HIERARCH ESO INS SOBJ NAME U_Sgr
RA 277.971025
DEC -19.12511
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 48.632
HIERARCH ESO ISS PBL12 END 48.616
HIERARCH ESO ISS PBLA12 START 149.0
HIERARCH ESO ISS PBLA12 END 149.4
HIERARCH ESO ISS PBL13 START 128.58
HIERARCH ESO ISS PBL13 END 128.789
HIERARCH ESO ISS PBLA13 START 90.7
HIERARCH ESO ISS PBLA13 END 91.1
HIERARCH ESO ISS PBL14 START 168.242
HIERARCH ESO ISS PBL14 END 168.395
HIERARCH ESO ISS PBLA14 START 23.447
HIERARCH ESO ISS PBLA14 END 23.918
HIERARCH ESO ISS PBL23 START 111.036
HIERARCH ESO ISS PBL23 END 111.261
HIERARCH ESO ISS PBLA23 START 68.8
HIERARCH ESO ISS PBLA23 END 69.2
HIERARCH ESO ISS PBL24 START 200.49
HIERARCH ESO ISS PBL24 END 200.577
HIERARCH ESO ISS PBLA24 START 12.072
HIERARCH ESO ISS PBLA24 END 12.539
HIERARCH ESO ISS PBL34 START 167.722
HIERARCH ESO ISS PBL34 END 167.66
HIERARCH ESO ISS PBLA34 START 338.443
HIERARCH ESO ISS PBLA34 END 338.85
HIERARCH ESO ISS AMBI TAU0 START 0.003191
HIERARCH ESO ISS AMBI TAU0 END 0.00369
HIERARCH ESO ISS AMBI TEMP 12.48
HIERARCH ESO ISS AMBI FWHM START 1.15
HIERARCH ESO ISS AMBI FWHM END 1.25