Results 11 to 20 of about 42,547 (217)

Using Search Engine Technology to Improve Library Catalogs [PDF]

open access: yes, 2010
This chapter outlines how search engine technology can be used in online public access library catalogs (OPACs) to help improve users’ experiences, to identify users’ intentions, and to indicate how it can be applied in the library context, along with ...
Lewandowski, Dirk, Dirk Lewandowski
core   +1 more source

20cm VLA radio-continuum study of M31: Images and point source catalogues [PDF]

open access: yesSerbian Astronomical Journal, 2012
We present a series of new high-sensitivity and high-resolution radio-continuum images of M31 at λ=20 cm (ν=1.4 GHz). These new images were produced by merging archived 20 cm radio-continuum observations from the Very Large Array (VLA) telescope.
Galvin T.J.   +5 more
doaj   +1 more source

Catalog-to-catalog reductions

open access: yesThe Astrophysical Journal, 1990
Les problemes de reduction systematique des catalogues d'etoiles, afin de creer un systeme positionnel uniforme et un systeme de mouvement propre standard, sont analyses.
L. G. Taff   +2 more
openaire   +1 more source

Artificial Star Test for Crowded Field CCD Photometry

open access: yesOpen Astronomy, 2015
A new method of performing an artificial star test (AST) for crowded field stellar CCD photometry is proposed. This AST method is superior in the cases when it is necessary to account for varying photometric quality across the study field, arising due to
Stonkutė R., Vansevičius V.
doaj   +1 more source

RESULTS OF PROCESSING OF ASTRONEGATIVES WITH COMMERCIAL SCANNER

open access: yesOdessa Astronomical Publications, 2014
Astrometric errors depending on the method of scanning with different spatial resolutions were studied  with commercial scanner such as   Epson Perfection V750 Pro.
Yu. I. Protsyuk   +3 more
doaj   +1 more source

SOFTWARE FOR PROCESSING OF DIGITIZED ASTRONEGATIVES FROM ARCHIVES AND DATABASES OF VIRTUAL OBSERVATORY

open access: yesOdessa Astronomical Publications, 2014
The paper discusses and illustrates the steps of  basic processing  of  digitized image of astro negatives. Software for  obtaining of a  rectangular coordinates and photometric values of objects on photographic plates was created in the environment ...
Yu. I. Protsyuk   +2 more
doaj   +1 more source

Resource Discovery: Catalogs, Cataloging, and the User [PDF]

open access: yesLibrary Trends, 2007
This article considers resource discovery from the viewpoint of visually impaired people. Starting with the tasks of find, identify, select, and obtain, it examines how catalogs can be enhanced to assist visually impaired users. It then looks at the inclusion of specific data within catalog records and how they help the user.
openaire   +1 more source

Consolidation of the Gaia catalogue with Chinese Space Station Telescope astrometry

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The issue of preservation and improvement of the Gaia catalogue throughout the next few decades is addressed. The goal of this study is to evaluate the feasibility of astrometric parameter update, for objects already in the catalogue, by inclusion of new
M. Gai   +6 more
doaj   +1 more source

Making Siberian Turkic Printed Collections Visible

open access: yesБиблиосфера, 2022
In the age of big data, small collections are often overlooked. Too numerically few to cause waves, the issues and problems that affect them are rarely addressed by cataloguing institutions. In the present paper, the author focuses on one such collection
M. J. Erdman
doaj   +1 more source

Chandra Observations of the X-Ray Binary Population in the Field of the Dwarf Galaxy IC 10

open access: yesAstronomy
IC 10 is a dwarf galaxy in Cassiopeia, located at a distance of 660 kpc, and hosts a young stellar population, a large number of Wolf–Rayet stars, and a large number of massive stars in general.
Sayantan Bhattacharya   +3 more
doaj   +1 more source

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