Observations | Telescope | CFHT 3.6 m | ESO 3.6 m |
Equipment | MOS/FP @ Cassegrain | CIGALE @ Cassegrain | |
Date | 2000, Feb. 28-Mar. 2 | 2002, April, 9 | |
Seeing | 1''-1.2'' | ![]() |
|
Calibration | Comparison light | ![]() |
![]() |
Fabry-Pérot | Interference order | 1162 @ 6562.78 Å | 796 @ 6562.78 Å |
Free spectral range at H![]() |
265 km s-1 | 378 km s-1 | |
Finesse(1) at H![]() |
14 | 12 | |
Spectral resolution at H![]() |
13 672(2) | 9375(2) | |
Sampling | Sampling step | 0.24 Å (10-11 km s-1) | 0.35 Å (16 km s-1) |
Number of scanning steps | 28 | 24 | |
Elementary observing time per interferogram | 300 (s) | 15 (s) | |
Total field | 352''![]() ![]() |
207![]() |
|
Pixel size | 0.88''(4) | 0.405''(4) | |
Detector | Fast STIS 2 CCD | GaAs/IPCS |
(1) Mean Finesse through the field of view.
(2) For a signal to noise ratio of 5 at the sample step. (3) Respectively for a raster 800 ![]() ![]() (4) After binning 2 ![]() |