  We present here the latest results obtained with the C-RED One camera
developed by First Light Imaging for fast ultra-low noise infrared
applications. This camera uses the Leonardo Saphira e-APD 320x256 infrared
sensor in an autonomous cryogenic environment with a low vibration pulse tube
and with embedded readout electronics system. Some recent improvements were
made to the camera. The first important one concerns the total noise of the
camera. Limited to 1.75 microns wavelength cut-off with proper cold filters,
looking at a blackbody at room temperature and f/4 beam aperture, we now
measure total noise down to 0.6 e at gain 50 in CDS mode 1720 FPS, dividing
previous noise figure by a factor 2. The total camera background of 30-400 e/s
is now achieved with a factor 3 of background reduction, the camera also
looking at a room temperature blackbody with an F/4 beam aperture. Image bias
oscillations, due to electronics grounding scheme, were carefully analyzed and
removed. Focal plane detector vibrations transmitted by the pulse tube cooling
machine were also analyzed, damped and measured down to 0.3 microns RMS,
reducing focal plane vibrations by a factor 3. In addition, a vacuum getter of
higher capacity is now used to offer camera operation without camera pumping
during months. The camera main characteristics are detailed: pulse tube cooling
at 80K with limited vibrations, permanent vacuum solution, ultra-low latency
Cameralink full data interface, safety management of the camera by firmware,
online firmware update, ambient liquid cooling and reduced weight of 20 kg.
