2013-074A
EADS-Astrium/Toulouse satellite. Planned ESA CS6. 2011 Dec. Mass 1934 kg launch, 1392 kg dry. Mass 2013 kg at L2 insertion.
Astro 1 and Astro 2 telescopes sep by 106 deg. 1.7 x 0.7 m aperture each. Radial velocity spectrophotometer with 0.75m aperture.
9.5m sunshield diameter. Payload module and service module, 3.0m dia, hexagonal frustum to 1.6m dia.
Astrometry of 1E9 stars. uas, 100 x Hip. 4-color photom and radial vels. L2, with PLM and SVM and shield.
Launch by Soyuz-ST from CSG.
L2 Lissajous of 120000 x 340000 x 180000 km, period 180 days
| Gaia | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2013 Dec 19 | 0912:19 | Launch by Soyuz E15000-004 | CSG ELS |
| T+1:58 Blok BVGD sep | |||
| T+3:40 Fairing sep | |||
| T+4:48 Blok A sep | |||
| T+4:54 KhO sep | |||
| 0921 | T+9:23 Blok I sep | -681 x 180 x 14.98 | |
| 0922 | T+10:23 Fregat MES-1 2:16 | ||
| 0924:58 | T+12:39 MECO-1 | 175 x 175 x 14.98 | |
| 0933:44 | T+21:25 MES-2 15:34 | ||
| 0949:18 | T+36:59 MECO-2 | 344 x 962690 x 14.98 | |
| 0954:18 | T+41:59 Fregat/Gaia sep | ||
| 0955 | T+43 Pressurize CPS (chemical prop) | ||
| Fregat MES-3 | |||
| Fregat MECO-3 | 374 x 2150152 x 14.99 | ||
| 1029 | T+1:17 Sun shield deploy | ||
| 1039 | T+1:27 SS deploy complete | ||
| 2013 Dec 19 | 2333 | Pass EL1:4 | |
| 2013 Dec 20 | TCM 23.5m/s | ||
| 2013 Dec 30 | L+12d TCM, L2 cal burn | ||
| 2014 Jan 3 | Sci payload on | ||
| 2014 Jan 7 | 1858 | OIM-1 2hrm/s into SEL2 lissajous, period 180d | |
| 2041 | OIM complete | ||
| 2014 Jan 13 | 0234 | Pass GSEx = -1.2Mkm | |
| 2014 Jan 14 | OIM-2 | 263000 x 707000 x 370000 | |
| 2019 Jan | Eclipse avoidance burn 14m/s | ||
Payload:
- Twin telescopes, 1.7 x 0.6 deg FOV, 106.5 deg sep
- Primary mirrors are 1.45 x 0.5m rectangular SiC. M1 and M'1.
- Secondary mirrors M2,M3 0.65 x 0.28m
- Fold mirrors M5,M6 0.54 x 0.36m.
- Radial velocity spectrometer, 8470-8740A Uses CaII triplet lines at 8498, 8542, 8552A
- Gaia Focal Plane Assembly, 106 CCDs, each 4500 x 1996 pixel, total 952 Mpix.. Operating temp -115C., scan at 0.9828ms per pixel due to SC spin.
- SkyMapper CCDs, 7 x 2 array
- Astrometric Field CCDs, 7 x 9 array
- Blue Photometer CCDs, 1 x 7 3300-6800A
- Red Photometer CCDs, 1 x 7 6400A-1mu
- Radial Velocity Spectrometer CCDs, 4 x 3
