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Accession number;99A0371723
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| Title;Characteristic Curves of Photographic Data Made with a Film Scanner. |
| Author;
IIZUKA YASUSHI
(Meisei Univ.)
YAMASAKI TAKAYUKI
(Meisei Univ.)
SUEMATSU YOSHINORI
(Kokuritsu Tenmondai)
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Journal Title;Report of the National Astronomical Observatory of Japan
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Journal Code:F0086B
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ISSN:0915-6321
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VOL.4;NO.2;PAGE.107-113(1999)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Thanks to the development of CCD camera and digital technologies, photographic observations in astronomy has been getting less popular and hence facilities to analyze the photographic data such as micro-densitometers are disappearing. Instead, a film scanning device with a linear CCD array (a film scanner), which can be controlled by a personal computer, becomes available and much more popular for a personal use. Hence, it is worth while examining the digitization accuracy of the commercial-based film scanner and seeking the possibility to replace the micro-densitometer with it. We found that the film scanner gives good accuracy in comparison with the micro-densitometer if the data are handled properly. We describe the method and technique how to calibrate photographic data using the film scanner. (author abst.) |
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