Table 1: IFP parameters.
Fabry-Perot interferometers

FP235 FP501

An order (at H $\alpha$ line) 235 501

Interfringe ( $\Delta\lambda$ ) 28 Å ( $1270~\mbox{km}~\mbox{s}^{-1}$ ) 13 Å ( $600~\mbox{km}~\mbox{s}^{-1}$ )

Resolution ( $\delta\lambda$ ) 3 Å ( $130~\mbox{km}~\mbox{s}^{-1}$ ) 1.2 Å ( $130~\mbox{km}~\mbox{s}^{-1}$ )

Spectral sampling:

(24-channel mode) 1.20 Å ( $53~\mbox{km}~\mbox{s}^{-1}$ ) 0.55 Å ( $25~\mbox{km}~\mbox{s}^{-1}$ )

(32-channel mode) 0.90 Å ( $40~\mbox{km}~\mbox{s}^{-1}$ ) 0.40 Å ( $20~\mbox{km}~\mbox{s}^{-1}$ )

**Table 1:** IFP parameters.
	Fabry-Perot interferometers
	FP235	FP501
An order (at H $\alpha$ line)	235	501
Interfringe ( $\Delta\lambda$ )	28 Å ( $1270~\mbox{km}~\mbox{s}^{-1}$ )	13 Å ( $600~\mbox{km}~\mbox{s}^{-1}$ )
Resolution ( $\delta\lambda$ )	3 Å ( $130~\mbox{km}~\mbox{s}^{-1}$ )	1.2 Å ( $130~\mbox{km}~\mbox{s}^{-1}$ )
Spectral sampling:
(24-channel mode)	1.20 Å ( $53~\mbox{km}~\mbox{s}^{-1}$ )	0.55 Å ( $25~\mbox{km}~\mbox{s}^{-1}$ )
(32-channel mode)	0.90 Å ( $40~\mbox{km}~\mbox{s}^{-1}$ )	0.40 Å ( $20~\mbox{km}~\mbox{s}^{-1}$ )

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Results
	5 Discussion
	6 Conclusions
	References
	Online Material
	4 Results for individual objects