Yu Yong, Zhao Jianhai, Tang Zhenghong, Liao Shilong. A Test of Commercial Scanners for Digitization of Astronomical Plates[J]. Astronomical Research and Technology, 2013, 10(3): 288-292.
Citation: Yu Yong, Zhao Jianhai, Tang Zhenghong, Liao Shilong. A Test of Commercial Scanners for Digitization of Astronomical Plates[J]. Astronomical Research and Technology, 2013, 10(3): 288-292.

A Test of Commercial Scanners for Digitization of Astronomical Plates

More Information
  • Received Date: May 19, 2012
  • Revised Date: June 11, 2012
  • Published Date: July 14, 2013
  • Digitization of astronomical plates has started in China, and the selection of high-precision scanners is a primary task for the digitization. We have tested 3 scanners, Epson V750 Pro, Epson 10000XL, and Phase One PowerPhase FX+. We have found that the PowerPhase FX+ has the highest scan precision, with the stability of scanning direction better than 0.5μm which equals to that of the CCD linear-array direction. We use the UCAC3 catalog as the reference in the test. Our results show that the images resulting from the scanning of a PowerPhase FX+ have complicated distortions, which need to be corrected with a 3-order plate model. Using such corrections the positional measurement accuracy of stars is 0.1" for the M79 astronomical plate taken with the Sheshan 40cm Telescope of the Shanghai Astronomical Observatory in 1987.
  • [1]
    Kavelaars J. PDPP Newsletter No. 2, 2004:15.
    [2]
    Hog E, Fabricius C, Makarov V, et al. Construction and verification of the Tycho-2 Catalogue[J]. Astronomy and Astrophysics, 2000, 357(1):367-386.
    [3]
    Torres G, Stefanik R. The cessation of eclipses in SS lacertae:the mystery solved[J]. The Astronomical Journal, 2000, 119(4):1914-1929.
    [4]
    Fresneau A, Argyle R, Marino G, et al. Potential of astrographic plates for stellar flare detection[J]. The Astronomical Journal, 2001, 121(1):517-524.
    [5]
    Vicente B, Abad C, Garzon F. Astrometry with "Carte du Ciel" plates, San Fernando zone. I. Digitization and measurement using a flatbed scanner[J]. Astronomy and Astrophysics, 2007, 471(3):1077-1090.
    [6]
    金文敬, 唐正宏, 王叔和, 等. 天文底片保存和我国天文底片数字化的建议[J]. 天文学进展, 2007, 25(1):1-12. Jin Wenjing, Tang Zhenghong, Wang Shuhe, et al. Preservation astronomical photographic plates and suggestions of plates digitization in China[J]. Progress in Astronomy, 2007, 25(1):1-12.
    [7]
    Zacharias N, Finch C, Girard T, et al. The third US naval observatory CCD astrograph catalog(UCAC3)[J]. The Astronomical Journal, 2010, 139(6):2184-2199.

Catalog

    Article views (245) PDF downloads (14) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return