Large-Scale Measurements of Thermospheric Dynamics with a Multisite Fabry-Perot Interferometer Network: Overview of Plans and Results from Midlatitude Measurements

Table 1

Instrument parameters for the initial FPIs to be used in this network.

Parameter	PARI	Illinois	Michigan	Kentucky
Etalon aperture (cm)	10.0	10.0	7.0	7.0
Etalon reflectivity	78%	~80%	78%	78%
630.0 nm filter transmission	55%	TBD	55%	55%
		(~55% expected)
no. of orders imaged	10	10	10	10
Etalon gap	1.5 cm	1.5 cm	1.5 cm	1.5 cm
Andor CCD detector	DU-412	DU-434	iKon-934	DU-434
CCD readout noise	4 e^−/pixel	3 e^−/pixel	3 e^−/pixel	3 e^−/pixel
CCD dark signal	0.0003 e^−/s/pixel	0.0004 e^−/s/pixel	0.0001 e^−/s/pixel	0.0004 e^−/s/pixel