Exposure
- ID
- GRAVI.2025-08-25T23:18:27.182_1
- Header ID
- GRAVI.2025-08-25T23:18:27.182
- Date updated
- 2025-08-25 23:30:51 UTC+0000
- Release date
- 2025-08-25 23:18:27 UTC+0000
- UTC Start
- 2025-08-25 23:18:27.182
- UTC End
- 2025-08-25 23:21:07.182
- MJD Start
- 60912.97114794
- MJD End
- 60912.972999791855
- Exposure time (s)
- 160.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003712
- Ambient temperature (°C)
- 11.99
- Seeing (arcsec)
- 0.855
Observation
- ID
- 70074
- Category
- calibrator
- 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
- 51989
- Name
- HD170887
- RA
- 278.118737
- DEC
- -19.45211
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-B5 | 48.1720 | 48.2200 | 143.7000 | 143.9000 |
| A0-J2 | 118.8530 | 119.4590 | 84.3000 | 84.6000 |
| A0-J6 | 165.4420 | 165.5560 | 14.3140 | 14.7130 |
| B5-J2 | 103.0260 | 103.4860 | 60.6000 | 61.0000 |
| B5-J6 | 199.5090 | 199.5340 | 3.5580 | 3.9120 |
| J2-J6 | 167.4660 | 167.5360 | 332.4890 | 332.6880 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 115.282E.002 |
| HIERARCH ESO DPR CATG | CALIB |
| HIERARCH ESO DPR TYPE | STD,SINGLE |
| MJD-OBS | 60912.97114794 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 171641 |
| HIERARCH ESO INS SOBJ NAME | HD170887 |
| RA | 278.118737 |
| DEC | -19.45211 |
| 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 | 178.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 10.0 |
| HIERARCH ESO DET2 NDIT | 16 |
| HIERARCH ESO ISS PBL12 START | 48.172 |
| HIERARCH ESO ISS PBL12 END | 48.22 |
| HIERARCH ESO ISS PBLA12 START | 143.7 |
| HIERARCH ESO ISS PBLA12 END | 143.9 |
| HIERARCH ESO ISS PBL13 START | 118.853 |
| HIERARCH ESO ISS PBL13 END | 119.459 |
| HIERARCH ESO ISS PBLA13 START | 84.3 |
| HIERARCH ESO ISS PBLA13 END | 84.6 |
| HIERARCH ESO ISS PBL14 START | 165.442 |
| HIERARCH ESO ISS PBL14 END | 165.556 |
| HIERARCH ESO ISS PBLA14 START | 14.314 |
| HIERARCH ESO ISS PBLA14 END | 14.713 |
| HIERARCH ESO ISS PBL23 START | 103.026 |
| HIERARCH ESO ISS PBL23 END | 103.486 |
| HIERARCH ESO ISS PBLA23 START | 60.6 |
| HIERARCH ESO ISS PBLA23 END | 61.0 |
| HIERARCH ESO ISS PBL24 START | 199.509 |
| HIERARCH ESO ISS PBL24 END | 199.534 |
| HIERARCH ESO ISS PBLA24 START | 3.558 |
| HIERARCH ESO ISS PBLA24 END | 3.912 |
| HIERARCH ESO ISS PBL34 START | 167.466 |
| HIERARCH ESO ISS PBL34 END | 167.536 |
| HIERARCH ESO ISS PBLA34 START | 332.489 |
| HIERARCH ESO ISS PBLA34 END | 332.688 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003712 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003712 |
| HIERARCH ESO ISS AMBI TEMP | 11.99 |
| HIERARCH ESO ISS AMBI FWHM START | 0.87 |
| HIERARCH ESO ISS AMBI FWHM END | 0.84 |