INVESTIGATION OF THE MICROTEK SCANMAKER 1000XL PLUS SCANNER OF THE INSTITUTE OF ASTROPHYSICS OF THE AKADEMY OF SCIENCES OF THE REPUBLIC OF TAJIKISTAN

A. Mullo-Abdolov, G. Kokhirova, H. Relke, Q. Yuldoshev, Yu. Protsyuk, V. Andruk

Анотація


This  work  was  done  to  estimate  the accuracy of the processing method of photographic plates and  the  detailed  study  of  the  Microtek  ScanMaker 1000XL  Plus  scanner,  which  plans  to  be  used  for  the digitizing  of  about  1600  photographic  plates  of  the Astrophysics Institute of the Academy of Sciences of the Republic of Tajikistan (Dushanbe) recorded for the FON project.  For  the  processing  of  these  photographic  plates will  be  used  software  created  in  the LINUX/MIDAS/ROMAFOT environment. Six sequential scans of a single plate (1150, the Pleiades cluster) with a spatial resolution of 1200 dpi were processed to evaluate the  repeatability  of  the  scanner's  astrometric  and photometric errors. The size of photographic plates is 8 x 8  degrees  (30  x  30  cm  or  13000  x  13000  pixels).  The estimated errors of the scanner for the stars brighter than B  <  13.5m  are  σxy  =  ±  0.054  pixels  for  the  rectangular coordinates  and  σm  =  ±  0.020m  for  the  instrumental magnitudes.  The  estimated  astrometric  accuracy  of  the processing  of  stellar  fields  of  photographic  plates  in  the system of the Tycho-2 catalogue is σαδ = ± 0.13".


Ключові слова


photographic plates; scanning; processing of digitized plates; astrometry; photometry; data analysis

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Посилання


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DOI: https://doi.org/10.18524/1810-4215.2017.30.114407

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