for Researchers

Overview of the Tomo-e Gozen camera

The Tomo-e Gozen camera is the world's first wide-field CMOS camera. All of the focal plane area of the Kiso Schmidt telescope, 9 degrees in diameter, is covered by 84 chips of 35 mm full HD CMOS image sensors.

Camera performance

Camera performance is listed in Table 1.

Table 1.
Field of view9 deg in diameter
Sky coverage20 deg2
Frame rate2 frames/sec (max)
Pixel size19 microns/pix
Pixel scale1.198 arcsec/pix
Sensor typeFrontside illuminated CMOS image sensor
with microlense array
Sensor format35 mm full HD, 1k x 2k pix2, 84 chips
Sensor readoutRolling readout, Partial readout available
FilterSDSS-g, Johnson-Cousins I

Survey Strategy

Optical wide-field and high-cadence surveys will begin from 2018 with the Tomo-e Gozen camera. Detection of rare and fast time-variable phenomena never found before are expected in these surveys.