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Using THELI pipeline in order to reduce Abell 226 multi-band optical images

Using THELI pipeline in order to reduce Abell 226 multi-band optical images

In this paper we review THELI (Erben & Schrimer, 2005), an image processing pipeline developed to reduce multipointing optical images taken by mosaic CCD cameras. This pipeline works on raw images by removing several instrumental contaminations, implementing photometric calibration and astrometr...

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Main Authors: Joveini, R., Sotoudeh, S., Roozrokh, A., Taheri, M.
Format: Article
Language:English
Published: Головна астрономічна обсерваторія НАН України 2013
Series:Advances in Astronomy and Space Physics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/119424
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spelling irk-123456789-1194242017-06-07T03:05:29Z Using THELI pipeline in order to reduce Abell 226 multi-band optical images Joveini, R. Sotoudeh, S. Roozrokh, A. Taheri, M. In this paper we review THELI (Erben & Schrimer, 2005), an image processing pipeline developed to reduce multipointing optical images taken by mosaic CCD cameras. This pipeline works on raw images by removing several instrumental contaminations, implementing photometric calibration and astrometric alignment, and constructing a deep co-added mosaic image complemented by a weight map. We demonstrate the procedure of reducing NGC 3923 images from raw data to the final results. We also demonstrate the quality of our data reduction strategy using mag-count and mag-error in mag plots. Emphasis is mainly placed on photometric calibration which is of great interest to us due to our scientific case. Based on the cross-association of the extracted catalogue against a reference catalogue of stellar magnitudes, zero-point calibration is performed. Our data reduction strategy and the method employed for cross-correlating large catalogues is also presented. 2013 Article Using THELI pipeline in order to reduce Abell 226 multi-band optical images / R. Joveini, S. Sotoudeh, A. Roozrokh, M. Taheri // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 1. — С. 38-41. — Бібліогр.: 7 назв. — англ. 2227-1481 http://dspace.nbuv.gov.ua/handle/123456789/119424 en Advances in Astronomy and Space Physics Головна астрономічна обсерваторія НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description In this paper we review THELI (Erben & Schrimer, 2005), an image processing pipeline developed to reduce multipointing optical images taken by mosaic CCD cameras. This pipeline works on raw images by removing several instrumental contaminations, implementing photometric calibration and astrometric alignment, and constructing a deep co-added mosaic image complemented by a weight map. We demonstrate the procedure of reducing NGC 3923 images from raw data to the final results. We also demonstrate the quality of our data reduction strategy using mag-count and mag-error in mag plots. Emphasis is mainly placed on photometric calibration which is of great interest to us due to our scientific case. Based on the cross-association of the extracted catalogue against a reference catalogue of stellar magnitudes, zero-point calibration is performed. Our data reduction strategy and the method employed for cross-correlating large catalogues is also presented.
format Article
author Joveini, R.
Sotoudeh, S.
Roozrokh, A.
Taheri, M.
spellingShingle Joveini, R.
Sotoudeh, S.
Roozrokh, A.
Taheri, M.
Using THELI pipeline in order to reduce Abell 226 multi-band optical images
Advances in Astronomy and Space Physics
author_facet Joveini, R.
Sotoudeh, S.
Roozrokh, A.
Taheri, M.
author_sort Joveini, R.
title Using THELI pipeline in order to reduce Abell 226 multi-band optical images
title_short Using THELI pipeline in order to reduce Abell 226 multi-band optical images
title_full Using THELI pipeline in order to reduce Abell 226 multi-band optical images
title_fullStr Using THELI pipeline in order to reduce Abell 226 multi-band optical images
title_full_unstemmed Using THELI pipeline in order to reduce Abell 226 multi-band optical images
title_sort using theli pipeline in order to reduce abell 226 multi-band optical images
publisher Головна астрономічна обсерваторія НАН України
publishDate 2013
url http://dspace.nbuv.gov.ua/handle/123456789/119424
citation_txt Using THELI pipeline in order to reduce Abell 226 multi-band optical images / R. Joveini, S. Sotoudeh, A. Roozrokh, M. Taheri // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 1. — С. 38-41. — Бібліогр.: 7 назв. — англ.
series Advances in Astronomy and Space Physics
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first_indexed 2023-10-18T20:34:31Z
last_indexed 2023-10-18T20:34:31Z
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