T4: Multipurpose telescope

		Polarization measurement	2-color measurement
Objective lens	Effecitve apature	250 mm	250 mm
	Working apature	250 mm	250 mm
	Number of lens	4	4
Imaging	FOV	400 arcsec	1000 arcsec
	Reliable FOV for wavelength-shift (diameter)	300 arcsec	1000 arcsec
	Effective FOV	300 arcsec	1000 arcsec
	Central wavelength	6302.50 A	6302.50/6562.81 A
Filters	Type	Fabry-Perrot (Tandem)	Fabry-Perrot
	Apature	60.0 mm	60.0 mm
	Total length	--- mm	--- mm
	FWHM	0.16 A	0.19 A
CCD	Size	36 mm	36 mm
	Pixel Number	4000 x 4000	4000 x 4000
	Max. Time Resolution
Optics	Total focal length	24751.8 mm	7425.6 mm
	Total F ratio	99.01	29.70
Path of light (click!)