Visible Natural Guide Star Wavefront Sensor Linear Stage Encoder Verification Study

被引：0
|
作者：
Macdonald, Scott [1 ]
机构：
[1] Natl Res Council Canada, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
来源：
GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY X | 2024年 / 13096卷
基金：
美国国家科学基金会; 加拿大创新基金会; 加拿大自然科学与工程研究理事会;
关键词：
TMT; Linear Stage; VNW; Encoder; Inductive; Magnetic;
D O I：
10.1117/12.3020836
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The Narrow Field InfraRed Adaptive Optics System (NFIRAOS) in the Thirty Meter Telescope faces challenges with its Visible Natural guide star Wavefront (VNW) sensor's linear stages and encoders. Initial tests revealed deficiencies in magnetic encoders impacting pupil motion calculations at -30 degrees C. Retrofitting with inductive encoders by AMOSIN showed improvement, but fell short. A compensation algorithm was developed to reduce the error to acceptable levels. This paper presents insights from testing different encoders, exploring methods for qualification and troubleshooting, crucial for optimizing NFIRAOS performance in ground-based astronomy.
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页数：7
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