Uncertainties in Ground-Based Visual Double Star Measures—II Accuracy of Measures

IF 1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomische Nachrichten Pub Date : 2025-06-16 DOI:10.1002/asna.70015

Graeme L. White, Roderick R. Letchford

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引用次数: 0

Abstract

Letchford and White 2025, Paper I, determined the uncertainties in ground-based historic measures of double stars. In this paper, the accuracy of 26,205 ground-based measures of 857 visual double stars, made since $\sim$ 1780, is determined relative to space-based measures based on positions and proper motion from the HIPPARCOS (via ASCC) and Gaia DR3 missions. We determine the accuracy of measures for the epoch of observation, the size of the telescope, the different attached instruments, and the filter applied. We find that the accuracy of the measures is improving with time; however, the typical telescope used for double-star observations has been, and continues to be, relatively small. Modern instrumentation such as speckle interferometry and lucky imaging has advanced the accuracy by a factor of ten over traditional micrometre measurements.

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地面视觉双星测量中的不确定性——ii测量精度

Letchford和White 2025，论文1，确定了基于地面的双星历史测量的不确定性。在本文中，相对于HIPPARCOS（通过ASCC）和Gaia DR3任务基于位置和适当运动的天基测量，确定了自$$ \sim $$ 1780年以来对857颗视觉双星进行的26,205次地面测量的精度。我们确定了观测历元、望远镜的大小、不同的附加仪器和应用的滤光片的测量精度。我们发现测量的准确性随着时间的推移而提高；然而，用于双星观测的典型望远镜一直是，而且将继续是相对较小的。像散斑干涉测量和幸运成像这样的现代仪器比传统的微米测量精度提高了十倍。

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来源期刊

Astronomische Nachrichten 地学天文-天文与天体物理

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.