Cumulative approach using Hough transform to segmentation of star chains in multi-exposures wide-field plate images

2011 ◽  
Author(s):  
Dimo Dimov ◽  
Aleksandar Dimov
Keyword(s):  
Hough Transform ◽  
Wide Field ◽  
Field Plate

The Wide-Field Plate Database: A New Tool in Observational Astronomy

1997 ◽  
pp. 462-464
Author(s):  
M. K. Tsvetkov ◽  
K. Y. Stavrev ◽  
K. P. Tsvetkova ◽  
E. H. Semkov ◽  
A. S. Mutafov ◽  
...  
Keyword(s):  
Wide Field ◽  
Observational Astronomy ◽  
Field Plate

scholarly journals The WG WFI Plate Database (WFPDB): Present Status

1994 ◽  
Vol 161 ◽  
pp. 359-364 ◽  
Author(s):  
M.K. Tsvetkov ◽  
K.Y. Stavrev ◽  
K.P. Tsvetkova ◽  
P.V. Ivanov ◽  
M.S. Iliev
Keyword(s):  
Present Status ◽  
Wide Field ◽  
Field Plate ◽  
Source Data ◽  
Readable Form ◽  
The Creation ◽  
Available Information

The present status of the work on the creation of a Wide-Field Plate Database is reported. It is planned to collect the available information for about 1.5 million plates from 187 wide-field instruments in 71 institutes/observatories. The source data are from 213 plate catalogues, 65 of them in computer-readable form. The structure and content of the Wide-Field Plate Database, now including 51 observation catalogues with more than 300,000 plates, is presented.

scholarly journals Wide-Field Plate Archive of the University Observatory Jena

2014 ◽  
Vol 335 (4) ◽  
pp. 440-447
Author(s):  
A.V. Poghosyan ◽  
W. Pfau ◽  
K.P. Tsvetkova ◽  
M. Mugrauer ◽  
M.K. Tsvetkov ◽  
...  
Keyword(s):  
Wide Field ◽  
Field Plate ◽  
The University

The Wide-Field Plate Database: Towards a European Plate Center

2000 ◽  
Vol 9 (4) ◽  
Author(s):  
M. K. Tsvetkov ◽  
M. Stavinschi ◽  
K. P. Tsvetkova ◽  
Κ. Y. Stavrev ◽  
H. D. Lukarski ◽  
...  
Keyword(s):  
Wide Field ◽  
Field Plate ◽  
Plate Center ◽  
European Plate

Schmidt Telescope Plate Archives

1995 ◽  
Vol 148 ◽  
pp. 148-155 ◽  
Author(s):  
Milcho Tsvetkov ◽  
Konstantin Stavrev ◽  
Katya Tsvetkova ◽  
Asen Mutafov ◽  
Michail-Ernesto Michailov
Keyword(s):  
Wide Field ◽  
Schmidt Telescope ◽  
Contemporary State ◽  
Field Plate

AbstractThe contemporary state of the Schmidt/Maksutov telescope plate archives and their unification in an Index Plate Catalogue as part of the Wide Field Plate Database is presented.

scholarly journals Sofia Sky-Archive Data Center: Photographic Plate Collections for Developing Countries

2001 ◽  
Vol 24 (3) ◽  
pp. 231-231 ◽  
Author(s):  
Mucho. K. Tsvetkov
Keyword(s):  
Developing Countries ◽  
Data Center ◽  
Computer Network ◽  
Photographic Plate ◽  
Wide Field ◽  
East Europe ◽  
Field Plate ◽  
Archive Data ◽  
The Way

The Sofia Sky Archive Data Center (SSADC) was developed on the base of the Wide-Field Plate Database (WFPDB – http://www.skyarchive.org) as a project of the Working Group on Sky Surveys, Commission 9 of the IAU, and is dedicated to saving plate collections. The center manages 12 PCs connected in a local computer network and a PDS 1010 microdensitometer donated by the European Southern Observatory. The main field of operation is the WFPDB development, plate digitization and image processing for different astronomical tasks in South- and East Europe (Russia, Ukraine, Armenia, etc.), and as a regional coordinator especially for the neighbour countries – Romania, Yugoslavia, Macedonia, Greece and Turkey. The main problem in the way of the WFPDB development is the creation of the computer-readable plate catalogues of the original logbooks because the speed of converting the logbooks in a computer-readable form is very low. The message is: we have to find the way to accelerate this important part of the project where the role of the developing countries in this direction should be very important. (Co-authors are: K. Tsvetkova, K. Stavrev V. Popov, H. Lukarski, A. Borisova, M-E. S. Michailov and G. Borisov of Sofia, Bulgaria, and S. Christov, Bulgarian South-West University).

scholarly journals Near-Earth Asteroids on Archival Schmidt Plates

1995 ◽  
Vol 148 ◽  
pp. 170-173
Author(s):  
R. H. McNaught ◽  
D. I. Steel ◽  
K. S. Russell ◽  
G. V. Williams
Keyword(s):  
Wide Field ◽  
Schmidt Telescope ◽  
Field Plate ◽  
The Earth ◽  
Routine Identification ◽  
Scientific Results ◽  
Near Earth Asteroids ◽  
Asteroids And Comets

AbstractWe describe our routine identification of images of asteroids and comets on plates and films in the U.K. Schmidt Telescope archive. The asteroids of most interest to us are those which approach the Earth, and whenever such an object is found (by anyone) we perform backintegrations in order to determine whether the object may have been recorded on any UKST plate taken since 1973. In many cases the object is found (‘precovered’) and measured, allowing an accurate orbit to be determined soon after its discovery; other studies such as long-term dynamical investigations, or predictions of future close approaches to the Earth, are then possible. Similar programs using other wide-field plate archives are to be encouraged, since valuable scientific results may be derived.

scholarly journals Wide-Field Plate Database: A Progress Report

1995 ◽  
Vol 151 ◽  
pp. 412-415
Author(s):  
M.K. Tsvetkov ◽  
K.Y. Stavrev ◽  
K.P. Tsvetkova ◽  
A.S. Mutafov
Keyword(s):  
Progress Report ◽  
Current Status ◽  
Wide Field ◽  
Field Observations ◽  
Access To Information ◽  
Field Plate ◽  
The World ◽  
On Line

AbstractThe current status of a database containing information on wide-field observations stored in plate archives all over the world is presented. The database will permit on-line access to information on nearly 2 · 106 wide-field (⪆ 1 degree) plates and films, obtained over more than a century with about 200 telescopes and cameras.

GRB optical search in the Wide-field Plate Database and in the Flare Stars Database

1996 ◽  
Author(s):  
Asen S. Mutafov ◽  
Amelia I. Makarieva ◽  
Milcho K. Tsvetkov ◽  
Katya P. Tsvetkova ◽  
René Hudec ◽  
...  
Keyword(s):  
Wide Field ◽  
Field Plate ◽  
Flare Stars

scholarly journals Wide-Field Plate Database: Latest Results

2011 ◽  
Vol 7 (S285) ◽  
pp. 417-419
Author(s):  
Milcho Tsvetkov ◽  
Katya Tsvetkova
Keyword(s):  
High Resolution ◽  
Digital Images ◽  
Wide Field ◽  
Low Resolution ◽  
High Quality ◽  
Meta Data ◽  
Photographic Images ◽  
Field Plate ◽  
Basic Source ◽  
Online Access

AbstractWe present the Wide-Field Plate Database, a basic source of data and meta-data for astronomy's more than 2.4 million wide-field photographic images obtained with professional telescopes worldwide. The technology developed in Sofia for plate digitization with commercial high-quality flatbed scanners yields low-resolution digital images for quick visualization and easy online access, and optimal high-resolution ones for photometric and astrometric investigations.

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