An Image Stabilization High-Resolution Camera for the Canada-France-Hawaii Telescope

Abstract

An image-stabilizing camera has been constructed at the Dominion Astrophysical Observatory, in collaboration with the University of Montreal and the Canada-France-Hawaii Telescope (CFHT) Corporation, for use at the prime focus of CFHT. This instrument incorporates a fast guider to follow image motion and a "smart" shutter to reject periods of image degradation. An aperture wheel is also available to study the improvement in image quality made by stopping down the entrance aperture of the camera. The design and performance characteristics of the instrument are reviewed here.

The structure of the BAL QSO 1700 + 518

“…The new optical images were taken in June 1990 with V and / filters with the HR Camera (McClure et al 1989) at the prime focus of the CFHT. The FWHM of the images was close to 0.5 arcsec, with a small amount of astigmatism.…”

The University of Hawaii 2.2 Meter Fast Tip‐Tilt Secondary System

“…In early tip-tilt systems, such as the Image Stabilizing Instrument System (ISIS) (Thompson & Ryerson 1984) and the High Resolution Camera (HRCam) (McClure et al 1989), built for the Canada-France-Hawaii Telescope (see Fig. 2a), the light from the telescope was directed onto a smaller mirror which could rapidly be tipped and tilted.…”

“…Other tip-tilt systems have been constructed and are in use for astronomical observations (see, for example, McClure et al 1989 ;McCaughrean et al 1994 ;Close & McCarthy 1994). The University of Hawaii system presents some new capabilities and alternative approaches to the design problems of tip-tilt systems.…”

Control for Optical Image Stabilization System in Digital Cameras

“…와 휴대폰 내장 카메라 [3], 광학 망원경 [4,5] 등에 사용되었고, 각각의 시스템에 적절한 제어기를 사용해서 시뮬레이션 결 과와 실험 결과를 보여주었다. 또한 IS 기술에는 빛 번짐 현 상을 소프트웨어를 사용하여 이미지를 처리하는 방법과 이 미지 센서를 이동시켜서 보정하는 방법 [7] …”