Welcome to the PAUCam instrument website

PAUCam is an optical imaging camera to be used at the prime focus of the William Herschel Telescope (WHT). The camera covers 1 deg2 FoV with 18 Hamamatsu photonics 4k x 2k, 15 um pixel CCDs.

The camera is installed with 6 large ugrizY filters covering each the total focal plane and 5 trays containing 40 narrow band filters (10 nm) covering the range between 450-850 nm on the 8 central CCDs. Additionally, there is the possibility to install two external custom filters.

Technical specifications summary

FOV 1 deg x 1 deg
Pixel Scale 0.265"
18 Hamamatsu Fully-Depleted 4K x 2K CCD detectors
Detectors gain: 0.6 - 0.7
Detectors dark current (@173K): ~ 1 e- pix/h
Detectors full well: 210000 e-
Bias signal: ~ 30k ADU
ADC range: 18 bits
Readout noise: ~ 9 e-
Readout time: 20 s
40 narrow-band filters (13 nm wide in steps of 10 nm)
6 wide-band filters: u, g, r, i, z, Y

For more details, visit the specific sections from the top menu.