Exposures can be taken with the blades moving in either direction. A total of 4096 exposure times are available that range from 5 ms to 20 s, in 5 ms increments. There is also a bulb command, for longer exposures, that allows the shutter to be held open for any desired length of time. An operating temperature of around -35oC is needed for suppression of dark current and to minimize proton gamma and neutron radiation effects. The NC employs passive radiative cooling to maintain the detector operating temperature.
All wavelengths are in Angstroms.
All filters have no requirements for lambda 11000. Rotating the mirror around the camera axis at the proper rate enables comet tracking during flyby. The mechanism consists of a cylindrical section with mirror and an anti-backlash mechanism, the drive unit with motor, gearbox and slip clutch, and a base housing the control electronics. The cylindrical section is coaxial with the camera lens. It consists of the rotational housing containing the mirror and a stationary housing with an anti backlash mechanism attached to it.