Kwasan and Hida Observatories, Graduate School of Schience, Kyoto University japanese Home page
The performance

T4: Multipurpose telescope

Polarization measurement2-color measurement
Objective lens Effecitve apature250 mm250 mm
Working apature250 mm250 mm
Number of lens44
Imaging FOV400 arcsec1000 arcsec
Reliable FOV for wavelength-shift (diameter)300 arcsec1000 arcsec
Effective FOV300 arcsec1000 arcsec
Central wavelength6302.50 A6302.50/6562.81 A
Filters TypeFabry-Perrot (Tandem)Fabry-Perrot
Apature60.0 mm60.0 mm
Total length--- mm --- mm
FWHM 0.16 A 0.19 A
CCD Size36 mm36 mm
Pixel Number4000 x 40004000 x 4000
Max. Time Resolution
Optics Total focal length24751.8 mm7425.6 mm
Total F ratio99.0129.70
Path of light (click!)Multipurpose Tele. path of lightMultipurpose tele path of light (2-color)