Fabry-Perot R4500
In the present days (May 2013), we have available a QueensGate Fabry-Perot borrowed from
Maryland’s University that can be installed into BTFI instrument to be used for higher resolution. The table bellow shows the
nominal characteristics gathered from the FP’s owner.
| Gap |
44 um |
|
| Free-Spectral Range |
48.7A at 6590.4 A |
2224km/s @ Hα |
| FWHM |
1.40A |
63.9 km/s @ Hα |
Fabry-Perot R20k
We also have the following Fabry-Perot, borrowed from Australian Astronomical Observatory, to be tested in the next few months (June/July 2013). The Fabry-Perot operates at a nominal Finesse of 30 at 5000A and nominal spectral resolution of 24000. Based in those values, here is a table with nominal values:
| Gap |
200 um |
|
| Free-Spectral Range |
6.25A |
245.5 km/s @ Hα |
| FWHM |
0.208A |
9.32 km/s @ Hα |