# International workshop on scientific use, digitization and preserving astronomical photographic records

## Abstracts

Rene Hudec: Worlds Astronomical Photographic Archives: Past, Present, Future

Astronomical Photographic Archives worldwide will be briefly presented and discussed as well as the recent status of their scientific use and digitization

Milcho Tsvetkov: Wide-Field Plate Database in a context of the development of the Astroinformatics

We describe the Wide-Field Plate Database (WFPDB www.wfpdb.org) as a basic source of data for the wide-field astronomical photographic plates obtained with professional telescopes worldwide in a context of the development of the Astroinformatics recourses. The WFPDB consists of four parts: Catalogue of Wide-Field Plate Archives (CWFPAs); Catalogue of Wide-Field Plate Indexes (CWFPIs), Data Bank of Digitized Plate Images, Links to online services and cross-correlation with other needed catalogues and journals. A special attention on the plate archiving is paid more...

Yuri Nefedyev: Ground-based and space photographies of the Moon: production, reduction, storage (poster)

In report we present the brief history of the development of photographic positional observations of the Moon in Kazan University and Engelhard Astronomical Observatory (EAO) from the end of the last century until the present. In EAO there is a big archive of the unique photographs of the Moon with stars and its reduction is carried out. The observations of the Moon are made to solve three problems: studying the rotation of the Moon, the mapping of the nearside of more...

Aleksey Andreev: GEAO Center of space researches and technologies and astronomical photographic plates library

Today on the basis of Engelhardt astronomical observatory (EAO) we are creating Centre of cosmic researches and techniques and Astropark according to the Program of the Kazan Federal University development. The Center has the following missions: education, science, astronomical tourism. In EAO there is a big glass library containing the photographic plates as well. Many plates are the pictures of the stars, planets, the Moon with stars etc. We are planning to scan and process these plates.

Kenesken Kuratov: Organization of virtual observatory in the Republic of Kazakhstan

The results of development, creation and equipment of automated system of telescope remote control via Internet from any point of the Earth are presented. It is planned the creation of virtual observatory on the basis of automated telescope.

Vojtech Simon: Photographic plates and the long-term activity of binary X-ray sources

We show that cataclysmic variables and related objects with their strong long-term activity are promising objects for monitoring using photographic plates. Activity of some of them undergoes large changes on timescale of decades – photographic data can significantly extend the mapped time interval, and to discover such changes. Such objects are often X-ray emitters and photographic data enable us to study their activity even in the time intervals before the discovery in X-rays (even many decades before). Unpredictable and rare more...

Omar Kurtanidze: The digitization of low dispersion spectral survey plates of the Milky Way

The results of the objective prism low dispersion (1250Å/mm at H gamma) spectral survey of the Galaxy equatorial ten degree belt (|b|<5°, 30°<l<165°, 195°<l<210°) are presented. More than 1500 Carbon Stars were identified, among them 862 new ones. The C/M5+ ratio increases from 0.02 to 0.30 when longitude varies from 30° to 210°. Besides, we also conducted the deepest low dispersion objective prism near-infrared (7200 A/mm at A band, IV-N+RG695, I=15.5 m) spectral survey of the Milky Way region |b|<5.2°, more...

Shuhrat Ehgamberdiev: Present status of the photographic archive of the Tashkent and Kitab astronomical observatories in Uzbekistan

Photographic glass archive of the Ulugh Beg Astronomical Institute contains of about 10 thousand plates obtained for the period 1895 – 1976 with a normal astrograph (D=330 mm; F=3436 mm; FOV= 2.5x2.5◦) installed at Tashkent and for period 1978 – 2004 with a Double Zeiss Astrograph (D=400 mm; F=3000 mm; FOV= 5.5x5.5◦) installed at Kitab Latitude station. The archive contains images of galaxies, planets, their satellites and asteroids, planetary nebulae and star clusters (330 plates). A few hundred plates contain more...

Kuysinoy Rashidova (Ehgamberdieva): Czech astronomer Josef Sykora and his life at the Tashkent astronomical observatory

Czech astronomer Josef Sykora worked at Tashkent astronomical observatory in 1906-1911. He made photographic observations at normal astrograph. In particular he photographed Halley comet in 1910. He emigrated to Czech Republic in 1921, but he kept contact with his colleagues in Tashkent. Since that time he worked at Prague astronomical observatory. Another astronomer of the Tashkent astronomical observatory V.V. Stratonov who was main observer at the Tashkent’s normal astrograph emigrated to Czech Republic in 1922. In 1938 he obtained more...

Detlef Groote: The Hamburg plate archives - a status report

later on

Zheng-Hong TANG: Initial results of the new digitization machine

Somce initial results of the new digitization machine will be presented.

Jian-Hai ZHAO: Initial results of the new digitization machine

Some initial results of the new digitization machine will be presented.

Kroll Peter: State of digitization of Sonneberg Plate Archive

Sonneberg Observatory is going to finish complete scanning of its plate archive. The talk provides an overview of the digital data and the current activities of making them accessible.

Blanka Hnulíková: Survey of the physical condition of photo albums Astronomical Institute of the Czech Academy of Sciences (poster)

During the survey was assessed mechanical, chemical and biological damage of photos and albums. For photos were of the suspected damage to the manifestation of \"golden illness\". In the conclusion was designed protection according to measure per priority.

Sergey Shugarov: The investigation of photometric variability novalike V380 Oph on archival and modern data (poster)

Lukas Hudec: Photographic plate digitization by digital camera

The alternative digitization method of photographic plates by digital camera will be presented and discussed

Taavi Tuvikene: From plate scans to light curves: calibrating extracted data and building the APPLAUSE database with PyPlate

We have developed methods for extracting and calibrating data from digitized photographic plates and have implemented the methods in the PyPlate package. PyPlate can be used to locate sources in direct images, calibrate source positions and magnitudes, process plate metadata, and write results to a database. Effectively, raw scans are turned into light curves of potentially millions of objects. In the presentation we show how PyPlate is applied to more than 40000 images to build the APPLAUSE database and how more...

Enke Harry: The APPLAUSE Data

The APPLAUSE website is publishing the second data release of astronomical photoplates. The talk will give some background and describe extend and aspects of the data release. Also, we will offer a \'hands-on\' tutorial how to use the published data set using the Query interface. (At an additional time of the meeting)

Sergei Vereshchagin: Open Star Clusters in the Zvenigorod Observatory Plate Archive (poster)

Stepanka Boryskova: Conservation Treatments on Glass Plate Negative with Flaking Gelatine Layer

This report show conservation treatments on glass plate negative with extremely damaged sensitive layer. In this case the glass plate was degraded and the bigger parts of the sensetive layer are separated from the glass support.

Petr Skala: Spectra measurement from historic digitalised plates

Christine Etienne: Observatoire de la Côte d\'Azur plates archive:contribution to scientific heritage in the Gaia era (poster)

The Observatoire de la Côte d’Azur (OCA), formerly Observatoire de Nice, owns 16 000 photographic plates or films taken during more than 60 years (1935-1996). They concern mainly instruments at OCA sites, the Nice Zeiss binocular astrograph and the Calern Schmidt telescope, but also collections from other observing sites. An important protection operation was undertaken in 2012 to preserve these astronomical photographic plates with a secured storage. A study of these plates will be realised including the archiving, preservation and more...

Petra Vávrová: Non-destructive methods for identification and survey of photographic techniques

A number of different kinds of methods have been developed and introduced to aid in the identification of photographs and different techniques. Presentation will be focus on description and important information of identification and survey of different kinds of photographic techniques, for example X-ray different kinds of microscopy, handheld X-Ray fluorescence spectrometry, infrared spectrometry (FTIR), system SurveNIR, microfadeometry for determination of light sensitivity.

Natalia Chupina: Open Star Clusters in the Zvenigorod Observatory Plate Archive (poster)

Ilgmars Eglitis: Astrometry and photometry of Pluto from digitized photographic observations during 1961 to 1996.

A catalog of equatorial coordinates and magnitudes of Pluto for the period 1961-1996 has been derived from digitized photographic observations from the combined digital archive of UkrGO Observatory and the Institute of Astronomy of University of Latvia. Improvement of software processing of digitally scanned images allowed single images to be extracted from multiple exposures of Pluto images represented on a single astronegative. As a result of the new treatment 22 new coordinate measurements of Pluto observations have been added to more...

Milan Spasovic: Sonneberg Sky Patrol Archive - Photometric Analysis

Early works on the sky patrol plates showed that photometric accuracy can be enhanced with fitting algorithms. The used procedure was a manually supported click-and-fit-routine, not suitable for automatic analysis of vast amount of photographic plates. We will present our progress on deconvolution of overlapping sources on the plates and compare photometric analysis using different methods. Our goal is to get light curves of sufficient quality from sky patrol plates, which can be classified with machine learning algorithms.

Kirill Sokolovsky: Variable stars identification in digitized photographic data

I discuss various techniques of identifying variable objects in a set of photographic lightcurves. The comparison is based on lightcurves obtained from the Moscow collection plates digitized with a commercial flat-bed scanner.

Roberto Nesci: The historic light curve of GR290 from plate archives

We have investigated the past light history of the luminous blue variable star GR 290 (M33/V532, Romano’s Star) in the M 33 galaxy, since 1901, using archival plates of Heidelberg, Pulkovo, Hamburg, Yerkes and Asiago The light curve showed that for at least half a century the star was in a low luminosity state, with B ≃18-19, at variance with the behaviour of the last 60 years.

The Plate Archive of the Cordoba Observatory includes 20.000 photographs and spectra on glass plates dating from 1893 to 1983. This contribution describes the work performed since the plate archive was transfered to the Observatory Library in 2011. In 2014 an interdisciplinary team was assembled and a research grant from the National University of Cordoba was obtained with the objectives of preserving the glass plates and generate public access for astronomers and other audiences. The preservation work not only includes more...

Thouvenin Nicolas: The Digitizing NAROO project

The arrival of the Gaia refernce catalogue will give a new interest in old photographic plates. All solar system objects observations made in the past will be worth to be re-reduced to provide accurate data. We will be able to observe in the past. For that purpose, Paris observatory will set up a new sub-micrometric scanning machine able to provide high accurate astrometric images. More, this machine will be able to digitize other types of plates for other scientific goals. In our presentation, we will explain more...

Sergei Schmalz: The Potsdam plate archive - a status report

A status report will be given on the progress in digitization of astronomical photographic plates at the Astrophysical Institute of Potsdam. Also, the development of the Astroplate Wiki web-page will be presented.

Elena Roshchina: The photographic plates archive of Pulkovo Observatory

The glass plate archive of Pulkovo Observatory contains about of 50 thousands of astronegatives with observations of more than 1400 objects. These plates were obtained during 1893–2007 years. Photographic observations are relevant still, since many scientific tasks require the observations obtained during a long period. Since 2000 we develop the processing methods to improve accuracy, increase productivity and take in account the safety of the photographic plates. In 2012, we proposed a news method of digitization, measurement and calibration of more...

Iryna Vavilova: Science with the UkrVO Joint Digitizad Archive of astroplates

A current state of the Joint Digitized Archive of astroplates (JDA) of the Ukrainian Virtual Observatory (UkrVO), which contains the celestial bodies observed from the end of XIX century, is described. A special attention is focused on the development and improvement of software for plate reduction and results for different scientific programs in 2014-2015. Among these programs are as follows: the star catalogues; astrometric tasks for giant and small planets of the Solar system, Pluto, and satellites of giant planets; more...

Yuri Protsyuk: Using plate archives as a first epoch for a proper motion catalogues.

In the Research Institute \"Nikolaev Astronomical Observatory\" (NAO) catalogue of position and proper motions of stars in the areas around the Galactic open clusters was created by using photographic and CCD observations obtained with different telescopes in the 20-21 century. In this report we present our final photographic catalogue for middle epoch 1983,6. First version was presented in 2014 [1]. All plates (20x20cm, 5ºx5º) obtained with the Zonal Astrograph of NAO (D = 116 mm, F = 2040 mm, scale =101\"/mm) more...

Yuri Protsyuk: The original astrometric software package for digitized photographic plates.

General algorithm for the data processing for the digitized photographic plates was developed in 2005 - 2014 (Andruk 2005, Yatsenko 2011, Protsyuk, 2014) and has been already applied in Kiev (Andruk 2016), Kitab (Andruk 2015) and Nikolaev (Protsyuk 2014). This algorithm uses the MIDAS routines to extract objects from the images (up to 32000 x 32000 pixels size) and to measure the rectangular coordinates of the found objects as well as their instrumental magnitudes, intensities and diameters (FWHM). One of more...

Yuri Protsyuk: Photographic Survey of the Northern Sky: hidden reserves

Catalogue FONAC of 2 million stars down to 14m was obtained in the last decade of the past century using the photographic plates of the survey with wide-field astrographs (FON). But the photographic observational material was not used in its entirety. The application of the commercial scanners for the digitizing of the FON collection of photographic plates from UkrVO Joint Digital Archive permits to obtain the stellar catalogue with 20 million entries – the total amount of objects more...

René Hudec: Digitization of Astronomical Plates in Mexico (poster)

Co-authors: Deborah Dultzin Kessler and Lukas Hudec Historical astronomical photographic plates stored at UNAM, Mexico City, Mexico including CdC plates were digitized by transportable system based on digital camera within collaborative CONACYT - AV CR project. Preliminary results will be presented and discussed.

René Hudec: Astronomical negatives from Satellite Tracking Cameras

There are very numerous photographic records taken by satellite tracking cameras, e.g. Baker-Nunn (SAO and USAF networks) and Hewitt. The total number of frames taken by these systems is more than 1 million. The photographic images (usually stored as long film stripes) have large FOV (typically 5 x 30 deg.), very good time resolution (from few seconds) and limiting magnitude up to 16. These database is hence well suited for astrophysical studies e.g. searches for and analyses of short more...

Ilgmars Eglitis: U-magnitudes of stars and galaxies from the digitized astronegatives of Baldone Schmidt telescope

Archive of 1.2m Baldone Schmidt telescope had 753 astronegatives in 314 fields exposed in Johnson U pass band. The goal of the work is to provide U-magnitudes of all objects (stars, galaxies, asteroids, etc.), recorded on these plates, due to the acute shortage of definitions of U-magnitudes of stars on the celestial sphere. Processing of several tens of test records gave the following result: accuracy of the equatorial coordinates of the stars in Tycho2 catalog is about 0.1arc seconds and more...

Ilgmars Eglitis: Asteroids from digitized processing of photographic observations in Baldone

Digital processing photographic plates of star fields allows, in addition to the main tasks to carry out a massive search for images of small bodies of the solar system and to determine their coordinates. From the observations of earlier epoch, you can extract information about the locations of these bodies well before discovering them. We analyzed the results of 20 observations of clusters in UVBR bands and 7 of Pluto observations made on the 1.2-m Schmidt telescope of the more...

Heber Ulrich: The digitization of the Bamberg plate archives: A status report

The Bamberg plate archives are currently being digitized In the context of a joint project with our partners in Hamburg and Potsdam. The data are integrated into the APPLAUSE data base. I give a status report and an outlook on the plans for the complete integration of the Bamberg archives.

Elizabeth Griffin: Digitizing Astronomical Spectra

The specific requirements for the accurate translation of photographic spectra into electronic formats are discussed critically, and prioritized. The digitizing equipment that can meet these requirements is specialized, and must be designed accordingly.

René Hudec: Long Term Optical Data for X Ray Monitors (poster)

Co-authors: Hudec L., Skala P. The X ray monitors of Lobster Eye in recent developments are expected to provide long term X ray (years and more) data for many celestial objects emitting soft X rays with emphasis on variable and transient sources. Most of these X ray sources are also sources of (variable) optical emission which is correlated with X ray emission. The knowledge of the very long term evolution of sources is important to understand the physical processes more...

Florian Rothmaier: The Wide-Field Plate Database in the Virtual Observatory

In recent years, great efforts were made to digitise photographic plate archives all over the world, and thus to stop the degradation of this considerable part of our cultural heritage. In Heidelberg, the digitisation of the Heidelberg Königstuhl Archives that encompasses more than 25000 photographic plates dating from the late 19th century to our days accompanied by a unique collection of observation logs was extended to some hundreds plates of Max Wolf\'s uranograph and may now be considered completed. An attractive more...

Aimo Sillanpää: Tuorla Observatory Plate Collection

I will very briefly discuss the Tuorla Observatory astronomical plate collection.

Kundera Tomasz: Current status of digitizing Polish astroplate archives

Authors: E.Kuligowska, T.Kundera, G.Stachowski, D.Woltański Three years ago, after several years of collecting information about Polish astrographic-plate archives, we began digitising them. The number of plates is sufficiently large that the scanning process is still ongoing. Here, we would like to present the current state of the project: what we have already achieved, how we deal with the plates and scanned images and the problems we have encountered so far.

Hippke Michael: KIC 8462852 did likely not fade during the last 100 years

A recent analysis found a completely unprecedented\'\' dimming of $0.165\\pm0.013$ magnitudes per century in the F3 main sequence star KIC8462852. This star is interesting, as it shows episodes of day-long dips with up to 20\\% dimming of unknown origin. We re-analyze the same Harvard archival Johnson B photometry and find serious issues in the data processing techniques used for KIC8462852. These errors include a hard cut of all data points with magnitudes dimmer than B$\\sim$12.5, leading to a skewed distribution more...

Elżbieta Kuligowska: Images of comets on archival photographic plates from the Jagiellonian University Observatory (poster)

Authors: G.Stachowski, E.Kuligowska, T.Kundera, B.Dębski and K. Bajan Of the surviving photographic plates at the Astronomical Observatory of the Jagiellonian University, recently scanned as part of the AstroGrid-PL project, some record observations of comets. In the poster we present some examples from plates made with the Zeiss Tessar Astrograph.

Frank Matthai: no presentation

just participating

Sara Schechner: On Preserving Annotations on Astronomical Plates and Their Enclosures

This paper will present the results of a recent survey of professional astronomers and historians on the scientific and historical importance of annotations on astronomical photographic plates and their jackets. A strong case is made for not removing them during preservation and digitization. If erasure is necessary, then photographic documentation of the annotations is essential. Recommendations for handling and cleaning the plates, photographing any annotations, and rehousing them will be shared.

Blanka Hnulíková: Assessment of the status of photographic plates from the Weinek archives (poster)

The archive contains positives and negatives with glass support, even autochrome. The evaluation assessed the degree of mechanical, chemical and biological damage.

DANIELA VOKOUNOVÁ: no presentation