Data processing of plates containing images of uranus and neptune from ukrvo digital archive: structure, quality analysis
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Дата
2015
Науковий керівник
Укладач
Редактор
Назва журналу
ISSN
E-ISSN
Назва тому
Видавець
Одеський національний університет імені І. І. Мечникова
Анотація
To use accumulated resources of UkrVO
digital archive, analysis of the available photographic plates
containing images of Uranus and Neptune was conducted.
Data processing of selected plates was also caried out to
provide an estimate of positional precision and accuracy.
Archives of the Research Institute: Nikolaev Astronomical
Observatory (NAO), Main Astronomical Observatory of
National Academy of Science (MAO), Astronomical Observatory
of Odessa National University (AO ONU), Astronomical
Observatory of Kyiv National University (AO
KNU) were used. Numbers of plates containing images of
Uranus and Neptune are, respectively, the following: 220 and
218 plates in NAO, 64 and 35 plates in MAO, 54 and 44
plates in AO ONU, 3 and 1 in AO KNU. Plates of NAO and
MAO have 2 or 3 exposures per plate, and other plates have
only one exposure per plate. The epoch of observation for
most plates is 1960 to 1998, and for only one plate is 1908.
All plates were scanned with the resolution not less
than 1200 dpi. Each plate of NAO was scanned 5 to 6
times. Plates containing images of Uranus and Neptune
were, respectively, scanned 618 and 952 times in NAO.
All plates of other observatories were scanned only once.
Raw image processing for scans containing images of
Uranus and Neptune was conducted for all scans obtained
in observatories. (X, Y) coordinates, (I) intensities and
FWHM values were obtained for images of all objects.
Star identification for scans containing images of Uranus
and Neptune was, respectively, conducted for 600 and 936
scans in NAO and for 71 scans in MAO. Coordinates of all
objects were obtained. Positional accuracy of reference
stars was estimated for 244 plates of NAO and 66 plates of
MAO, and has value of 0.08″-0.26″.
Опис
Ключові слова
astronomical data bases, astrometry - methods, data analysis – catalogs
Бібліографічний опис
Odessa Astronomical publications = Одесские астрономические публикации = Одеські астрономічні публікації