This paper is intended primarily for the LAMOST UCAM CCD systems. The illustrations given here
show the prototype LAMOST UCAM systems. Designed as a universal CCD controller, the UCAM
system has variety options of readout modes, sampling speeds, binning options and charge clean. Its
main components, architecture and technical design are introduced here. Some important performance
characteristics about the UCAM controller and the e2v-203-82 CCD (4K by 4K, blue CCD) are tested
under laboratory conditions, such as readout noise and gain at different sampling modes and readout
speeds, CTE, dark current, QE, and fringing. Perfect CTE and less than 3 electrons / pixel system
readout noise prove that the UCAM CCD controller system meets the requirement of the LAMOST
Some new important progresses of the measuring system for fiber position of LAMOST (Large Area Multi-Object Fiber
Spectroscope Telescope) are introduced in this paper. This improved model is based on the principle of calculating the
photometric gravity's center of the fiber's CCD digital image, which was discussed in the previews paper . More
effective image manipulation and data processing methods have been used to improve the measuring precision.
How to make a standard target as big as the size of the whole focal plane of LAMOST for calibration between the CCD
camera and the focal plane of LAMOST in measurement was an unsolvable problem in the primary measure model, and
it has been resolved in the proved design and will be shown next in this article.
The measuring system of fiber position of LAMOST (Large Area Multi-Object Fiber Spectroscope Telescope) is introduced in this paper. A method of photometric gravity's center is discussed. A laboratorial system for measuring position of a few of fibers in a small scale has been finished. The results of the experiment are satisfactory. Based on the experience of laboratorial experiments, we are now designing the measuring system of fiber position of LAMOST. A conceptual design is described in this paper.