2008-029A
FGST, the Fermi Gamma-ray Space Telescope, known as Gamma Ray Large Area Space Telescope until 2008 Aug 26. The NASA/DoE GLAST observes at GeV energies. Delta-class mission. The LAT uses a CsI calorimeter array with a plastic scintillator anticoincidence detector. Field of view is 20 percent of the sky; the telescope is over 30 times more sensitive than EGRET and has a spatial resolution of a few arcmin. The GBM is a successor to BATSE; smaller and less sensitive, it has a wider energy range and is optimised to detect bursts in the same direction as LAT, to provide full spectral coverage from the lowest GBM to the highest LAT energies.
Gamma Ray Large Area Space Telescope (GLAST) is the successor to Compton and covers the range from 10 MeV to 300 GeV. Resolution is 1 arcmin with field of view 20 percent of the sky and 4 percent energy resolution.
Launch by Delta 7920H-10. Mass 4277 kg. Orbit 565 x 565 x 28.5.
NASA-OSS is the sponsor and GSFC manages GLAST; LAT PI is Stanford, with Huntsville and MPE making the GBM.
The Orbital/Gilbert, formerly General Dynamics C4 Systems (Spectrum Astro) Leostar-3 (formerly SA-200) spacecraft is about 2.8m high 2.5m dia box with 2 panels. Mass 4627 kg of which 3097 kg is LAT. Prop is 358 kg. Launch by Delta 7920H-10 with a 6915 PAF adapter.
| GLAST | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2008 Jun 11 | 1605:00 | Launch by Delta 7920H-10C | CC SLC17B |
| T+1:17 SRM 1-6 out | |||
| T+1:19 SRM 7-9 on | |||
| T+1:20 SRM 1-6 sep | |||
| T+2:35 SRM 7-9 out | |||
| T+2:39 SRM 7-9 sep | |||
| T+4:24 MECO 119 km Vi 6.316 km/s | |||
| T+4:33 Stage 1 sep | |||
| T+4:38 SES-1 | |||
| T+4:43 Fairing sep | |||
| 1615:13 | T+10:13 SECO-1 | 185 x 600 x 28.51 (PK) | |
| 189 x 588 x 28.51 (TLE) | |||
| 1713:10 | T+1:08:10 SES-2 | ||
| 1714:15 | T+1:09:15 SECO-2 | 557 x 557 x 28.5 | |
| 1720:02 | T+1:15:02 Stage 2 sep | ||
| 1741:42 | T+1:36:42 SES-3 evasive | ||
| 1741:48 | T+1:36:48 SECO-3 | 213 x 552 x 25.51 | |
| 1755:31 | T+1:50:31 SES-4 depletion | ||
| 1755:47 | T+1:50:47 SECO-4 | 183 x 537 x 20.42 | |
| 2058 | 95.69 542 x 561 x 25.6 | ||
| 2012 Apr 3 | TCM to avoid Kosmos-1805 | ||
| 2018 Mar 22 | Safemode, stuck solar array | ||
| 2018 Mar 28 | Reactivate with fixed array | ||
Payload:
- LAT Large Area Telescope 20 MeV-300 GeV CsI Calorimeter/tower module (25) (Stanford/Michelson)
- GBM Gamma Burst Monitor 10 keV - 30 MeV (MSFC/Meegan)
