arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.3250astro-ph.IM
收藏

天体测量和photometry与HST-WFC3。I. UVIS通道的F225W、F275W、F336W频带的几何失真校正

Astrometry and photometry with HST-WFC3. I. Geometric distortion corrections of F225W, F275W, F336W bands of the UVIS-channel

A. Bellini, L. R. Bedin

摘要:

哈勃空间望远镜3号宽视场照相机紫外线通道的精确几何畸变解是其用于高精度天体测量的第一步。在这项工作中,我们提出了一个平均修正,使一个相对天体测量精度~1质量(在每个轴上曝光良好的恒星)在三个宽带紫外线过滤器(F225 W,F275 W,和F336 W)。需要更多的数据和对仪器的更好理解,以将解决方案限制在更高的准确度水平。

英文摘要:

An accurate geometric distortion solution for the Hubble Space Telescope UVIS-channel of Wide Field Camera 3 is the first step towards its use for high precision astrometry. In this work we present an average correction that enables a relative astrometric accuracy of ~1 mas (in each axis for well exposed stars) in three broad-band ultraviolet filters (F225W, F275W, and F336W). More data and a better understanding of the instrument are required to constrain the solution to a higher level of accuracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑