 | Summary
 | f/5 1/8-m Ebert design spectrograph with 1/8 m telescope |
| MUV (180-320 nm) coverage |
| Selectable 40 nm passband |
| 0.4 nm spectral resolution |
| Passband complements the EUV/FUV coverage of HITS and LORAAS |
|
| Telescope
| Baffled tube |
| Spherical mirror, 12.5 cm focal length used off-axis |
| 25 mm X 25 mm blank |
| MgF2/Al reflective coating |
|
| Collimating and focusing mirror
| Spherical mirror, 12.5 cm focal length |
| MgF2/Al reflective coating |
|
| Grating
| 3600 lines/mm ruled grating |
| planar 25 mm X 25 mm |
| MgF2/Al reflective coating |
|
| Detector
| ITT F4145 proximity focused channel intensifier
 | Quartz window |
| CsTe photocathode |
| Dual microchannel plates in chevron configuration |
| P20 phosphor |
| Fiber optic output window |
|
| Hammamatsu S3904 MOS linear image sensor
| 1024-diode 1-D array detector |
| 20 um X 2.5mm pixels with 25 um pixel spacing |
|
|
| Field-of-View
| 0.034 vertical resolution (1.5 km) |
| 1.1 degree horizontal field-of-view (55 km) |
| Co-aligned with HITS and LORAAS |
| Limb scanned by gimballing the main platform |
|
ISAAC
