6.5m Telescope Information for Observations

Telescope

Longitude: 292d16m E
Latitude: -22d59m N
Altitude: 5640 m
Time zone: CLT (UTC-4) or CLST (UTC-3)
Seeing: 0.69 arcsec in V-band in median
Precipitable water vapor: ~0.3 mm, ~0.4 mm, ~0.7 mm, and ~1.2 mm in the 10 percentile, 25 percentile, median, and 75 percentile, respectively; more information can be found here

Mount: an altazimuth system
Range of movement: 22-89 degrees for altitude, 360 degrees (+-270 degrees) for azimuth
Maximum rotation speed: 2 degrees per second for altitude and azimuth
Pointing accuracy: 2 arcsec in RMS radius
Tracking accuracy: 0.2 arcsec in RMS radius for 10 minutes in open tracking at the wind speed of less than 15 m/s
Required time in tertiary mirror rotation: about 2 minutes in 180-degree rotation

rotates observational instruments and auxiliary components for canceling out the rotation of the field of view
one rotator for each Nasmyth focus
Components: an instrument, a Shack-Hartmann wavefront sensor, and an auto guider camera
Maximum rotation speed: 3 degrees per second

always activates during the observations to detect the errors of the primary mirror shape
Limiting magnitude for guide stars: 16.0 mag in V-band for NICE and SWIMS, or 14.2 mag in I-band for MIMIZUKU

for correcting the telescope tracking errors
non-mandatory in observations if the tracking error is acceptable
Field of view: 16.6 x 12.2 arcsec for NICE and SWIMS, and 41 x 55 arcsec for MIMIZUKU
Movable area: 10 arcmin radius from the telescope optical axis
Limiting magnitude for SWIMS: 16.0 mag, 15.2 mag, and 14.5 mag in V-, R-, and I-band, respectively, in a 10-second exposure
Limiting magnitude for MIMZUKU: 14.5 mag in I-band in a 10-second exposure at 0.6 arcsec seeing
Tracking accuracy with feedback: 0.15 times seeing