The orthogonal transfer CCD

被引:61
作者
Tonry, JL
Burke, BE
Schechter, PL
机构
[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139
[2] MIT,LINCOLN LAB,LEXINGTON,MA 02173
关键词
D O I
10.1086/133989
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have designed and built a new type of CCD that we call an orthogonal transfer CCD (OTCCD), which permits parallel clocking horizontally as well as vertically. The device has been used successfully to remove image motion caused by atmospheric turbulence at rates up to 100 Hz, and promises to be a better, cheaper way to carry out image motion correction for imaging than by using fast tip/tilt mirrors. We report on the device characteristics, and find that the large number of transfers needed to track image motion does not significantly degrade the image either because of charge-transfer inefficiency or because of charge traps. For example,after 100 a of tracking at 100 Hz approximately 3% of the charge would diffuse into a skirt around the point-spread function. Four nights of data at the Michigan-Dartmouth-MIT (MDM) 2.4-m telescope also indicate that the atmosphere is surprisingly benign, in terms of both the speed and coherence angle of image motion, Image motion compensation improved image sharpness by about 0.'' 5 in quadrature with no degradation over a field of at least 3 arcmin.
引用
收藏
页码:1154 / 1164
页数:11
相关论文
共 22 条
[1]  
[Anonymous], 1992, SMR
[2]   ADAPTIVE OPTICS FOR ASTRONOMY - PRINCIPLES, PERFORMANCE, AND APPLICATIONS [J].
BECKERS, JM .
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1993, 31 :13-62
[3]   COMPARISON OF VERTICAL PROFILE TURBULENCE STRUCTURE WITH STELLAR OBSERVATIONS [J].
BUFTON, JL .
APPLIED OPTICS, 1973, 12 (08) :1785-1793
[4]   AN ORTHOGONAL-TRANSFER CCD IMAGER [J].
BURKE, BE ;
REICH, RK ;
SAVOYE, ED ;
TONRY, JL .
IEEE TRANSACTIONS ON ELECTRON DEVICES, 1994, 41 (12) :2482-2484
[5]   CHARGE-COUPLED DEVICE STRUCTURES FOR VLSI MEMORIES [J].
CHATTERJEE, PK ;
TAYLOR, GW ;
TASCH, AF .
IEEE TRANSACTIONS ON ELECTRON DEVICES, 1979, 26 (06) :871-881
[6]  
CUILLANDRE JC, 1994, ASTRON ASTROPHYS, V281, P603
[7]   A CRITICAL-REVIEW OF SELECTED TECHNIQUES FOR MEASURING EXTRAGALACTIC DISTANCES [J].
JACOBY, GH ;
BRANCH, D ;
CIARDULLO, R ;
DAVIES, RL ;
HARRIS, WE ;
PIERCE, MJ ;
PRITCHET, CJ ;
TONRY, JL ;
WELCH, DL .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1992, 104 (678) :599-662
[8]  
KOLMOGOROV AN, 1941, DOKL AKAD NAUK SSSR, V30, P229
[9]  
MCCARTHY JK, 1997, UNPUB
[10]   AN IMAGE-STABILIZATION, HIGH-RESOLUTION CAMERA FOR THE CANADA-FRANCE-HAWAII TELESCOPE [J].
MCCLURE, RD ;
GRUNDMANN, WA ;
RAMBOLD, WN ;
FLETCHER, JM ;
RICHARDSON, EH ;
STILBURN, JR ;
RACINE, R ;
CHRISTIAN, CA ;
WADDELL, P .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1989, 101 (646) :1156-1165