19 citations · 38 across the 5 of their papers we have counts for
5 papers
Precision premium transformation -- a high-precision astrometric solution based on the precision premium curve
Z. J. Zheng, Q. Y. Peng, F. R. Lin +2
Context. In Gaia era, atmospheric turbulence, which causes stochastic wander of a star image, is a fundamental limitation to the astrometric accuracy of ground-based optical imagin…
A Deeper Solution to the Actual Geometry of CCD Mosaic Chips
Z. J. Zheng, Q. Y. Peng, A. Vienne +2
We present a solution to determine the actual or physical relative positions between CCD chips. Due to the limited depth of the Gaia catalogue, there may be few stars identified fr…
Investigation and Application of Fitting Models for Centering Algorithms in Astrometry
F. R. Lin, Q. Y. Peng, Z. J. Zheng +2
To determine the precise positions of stars in CCD frames, various centering algorithms have been proposed for astrometry. The effective point spread function (ePSF) and the Gaussi…
Characterization of precision premium in astrometry
F. R. Lin, J. H. Peng, Z. J. Zheng +1
Precision premium, a concept in astrometry that was firstly presented by Pascu in 1994, initially means that the relative positional measurement of the Galilean satellites of Jupit…
Fringes' Impacts to Astrometry and Photometry of Stars
Z. J. Zheng, Q. Y. Peng
Fringes often appear in a CCD frame, especially when a thin CCD chip and a R or I filter is used. 88 CCD frames of the two open clusters NGC 2324 and NGC 1664 with a Johnson I filt…