T80Cam: the wide field camera for the OAJ 83-cm telescope
The Observatorio Astrofísico de Javalambre (OAJ) is a new
astronomical facility located at the Sierra de Javalambre (Teruel,
Spain) whose primary role will be to conduct all-sky astronomical
surveys. The OAJ facility will have two wide-field telescopes: the
JST/T250; a 2.55-m telescope with a 3° diameter field of view (FoV),
and the JAST/T80; an 0.83-m telescope with a 2° diameter FoV. First
light instrumentation is being designed to exploit the survey
capabilities of the OAJ telescopes. This paper describes the T80Cam, a
wide-field camera that will be installed at the Cassegrain focus of the
JAST/T80. It is equipped with an STA 1600 backside illuminated detector.
This is a 10.5k-by-10.5k, 9μm pixel, high efficiency CCD that is read
from 16 ports simultaneously, allowing read times of ~20s with a typical
read noise of 6 electrons (rms). This full wafer CCD covers a large
fraction of the JAST/T80’s FoV with a pixel scale of ~0.50"/pixel.
T80Cam will observe in the wavelength range 330-1000nm through a set of
12 carefully optimized broad-, intermediate- and narrow-band filters.
The camera is intended for surveys with the JAST/T80 telescope, starting
with the planned J-PLUS (Javalambre Photometric Local Universe Survey),
a multi-band photometric all-sky survey that will be completed in about
2 years and will reach AB˜ 23 mag (5σ level) with the SDSS
filters.