Results of Photometric Observations of Comet P/2019 LD2 at the Sanglokh Observatory

Solar System Research - The short-period comet P/2019 LD2 (Atlas) was discovered in June 2019. The object was originally classified as a Trojan asteroid, but was later included in the Jupiter...     

乌鲁木齐25m射电望远镜的 单天线观测研究

自1993年乌鲁木齐天文站25m射电望远镜建成以来,除了不断完善VLBI观测系统外,还选择发展了具有科学价值的单天线天体物理观测课题。其中基于常温接收机的脉冲星脉冲到达时间观测系统已经于1999年5～6月间建成。该系统建立在25m射电天线的18cm波段上,消色散采用了2×128×2．5MHz多通道滤波器和数字化器,并由PC机完成数据采集。同时进行的脉冲星工作还有92cm及其它波段的脉冲轮廓监测,对0329+54的多波段观测得到了它的频谱。在25m天线的1．3cm波段上建立了基于声表面波频谱仪和频率综合器的分子谱线观测系统,对水脉泽的观测已经发现了十几个可能的水脉泽源,观测结果正在认证当中。     

2010年上海天文台卫星激光测距观测报告

介绍了2010年上海天文台卫星激光测距的常规观测和白天千赫兹激光测距情况。在国际上首次对同步轨道卫星开展了千赫兹激光测距,作用距离达38800多千米,测距系统性能达到国际先进水平。利用2套独立的激光测距系统,开展了激光收发分离测距实验,为行星际异步应答式激光测距模拟试验提供了实测数据。最后概述了空间碎片目标激光测距进展情况。     

云南天文台天文新技术实验室工作进展

云南天文台新技术实验室成立至今已走过十几个年头，这些年来为云南天文台的发展作出了很多的贡献。从我国的第一套ＣＣＤ系统到天文遥在观测，不但在天文技术领域有所发展，而且目前拥有一支老中青相结合的相对稳定的队伍。本文主要回顾了新技术室这些年来的主要工作。     

北京天文台对FFS事件的观测研究

从观测手段和取得的资料两个方面,评价了两个太阳峰年中北京天文台所观测到的太阳射电爆发中毫秒级快速精细结构（FFS）的观测结果．估计了新的观测仪器在第23周峰年将取得的观测结果．也讨论了在观测研究中值得重视的一些问题．     

Solar research at the Pulkovo Astronomical Observatory

The paper deals with the review of works on solar observations at Abastumani Astrophysical Observatory during the past 12 years. The works accomplished on the basis of patrol observations, with the horizontal solar telescope, small and large coronagraphs, and those based on the data obtained during eclipse observations are discussed separately.     

Follow-Up Spectroscopy of Supernovae at Bisei Astronomical Observatory

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Solar Stokes Spectrum Observation at Yunnan Astronomical Observatory

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Observations of extrasolar planet transits with the automated telescopes of the Pulkovo Astronomical Observatory

Exoplanet observations have been performed on the automated Pulkovo Observatory telescopes. We have obtained 33 transit light curves for 16 known exoplanets and six transit observations for three exoplanet candidates discovered by the Kepler telescope. Based on our observations, we have reliably confirmed the existence of an exoplanet with an extremely large radius, R _pl = 1.83 ± 0.16R _Jup, in the system KOI 256 and detected a strong deviation of its orbital revolution from the theoretically predicted one. During the transit of the exoplanet WASP-12b across the stellar disk, we detected bursts that could be caused by the planet transit across spots on the star or by the presence of a satellite around this exoplanet. We detected possible periodic variations in the duration of the exoplanet transit across the stellar disk with time for HAT-P-12b that could be caused by variations in orbital inclination. The transit duration and depth, the central transit time, and the radius and orbital inclination of the planet have been estimated. The equilibrium temperature and albedo have been estimated for several exoplanets.     

陶寺观象台遗址的天文学分析

对陶寺观象台遗址的外观形态,用天文方法分析了12个测缝与日出日期的对应关系和天文学作用,对比了考古队的模拟观测与理论计算的结果.分析指出,测缝E2一E12对应于一周年的日出方向,大致均分,产生一个不均匀的时间体系.E1对应于"月南至",提供一个18-19年的年代指示.这是一个集礼仪祭祀和观象授时为一体的建筑.     

Installation of solar chromospheric telescope at the Indian Astronomical Observatory,Merak

We report the observations of the solar chromosphere from a newly commissioned solar telescope at the incursion site near Pangong Tso lake in Merak (Leh/Ladakh). This new \(\hbox {H}_{\alpha }\) telescope at the Merak site is identical to the Kodaikanal \(\hbox {H}_{\alpha }\) telescope. The telescope was installed in the month of August 2017 at the Merak site. The telescope consists of a 20-cm doublet lens with additional re-imaging optics. A Lyot filter with 0.5 Å passband isolates the Balmer line of the hydrogen spectra to make the observations of the solar chromosphere. The observations made in \(\hbox {H}_{\alpha }\) wavelength delineates the magnetic field directions at the sunspot and the quiet regions. A CCD detector records the images of the chromosphere with a pixel resolution of 0.27\(^{\prime \prime }\) and covers 9.2\(^{\prime }\) field-of-view. This telescope has a good guiding system that keeps the FoV in the intended position. We report the development of control software for tuning the filter unit, control detector system, observations and calibration of the data to make it useful for the scientific community. Some preliminary results obtained from the Merak \(\hbox {H}_{\alpha }\) telescope are also presented. This high altitude facility is a timely addition to regularly obtain \(\hbox {H}_{\alpha }\) images around the globe.     

Solar physics at the Main Astronomical Observatory of the Ukrainian Academy of Sciences

A brief review of the research highlights at the Main Astronomical Observatory since 1968.     

北京天文台施密特望远镜驱动系统的改进设计

介绍了北京天文台 60 0 / 90 0mm施密特望远镜驱动系统的改进设计 ,即用 2只步进电机 ,取代了原望远镜由 4只变速箱、 7只电机驱动的复杂的赤经 ,赤纬驱动系统 ,最终实现了计算机控制。     

太阳二十二周峰年云南天文台四波段射电同步观测结果

本文主要介绍云南天文台“四波段太阳射电高时间分辨率同步观测系统”（１．４２，２．１３，２．８４和４．２６ＧＨｚ）１９８９年１２月至１９９３年４月观测事件的统计结果，对１０２个射电爆发进行了初步分析，着重揭示几个类别典型事件的时间轮廓，说明射电高时间分辨率观测的意义。     

Observations of Minor Planets at Dresden Lohrmann Observatory

Observed positions of minor planets from 1980 and 1981 at the Zeiss-Sonnefeld astrograph 300/1500 of the Lohrmann Observatory at Dresden-Gönnsdorf are communicated.     

Observations of Minor Plaets at Dresden Lohrmann Observatory

Observed positions of minor planets from 1979 and 1980 at the Zeiss-Sonnefeld astrograph 300/1500 of the Lohrmann Observatory at Dresden-Gönnsdorf are communicated.     

Results of Astrometric Observations of Distant Satellites of Jupiter with the New Telescope of the Caucasian Mountain Observatory,Sternberg Astronomical Institute,Moscow State University

Solar System Research - Replenishment of the database of observations of distant satellites of planets is always useful, since the accuracy of the motion models and ephemeris depends not only on...