Ultrahigh-resolution photographic films for x-ray/EUV/FUV astronomy

Richard B. Hoover; Arthur B. C. Walker II; Craig Edward DeForest; Richard N. Watts; Charles Tarrio

doi:10.1117/12.140587

21 January 1993 Ultrahigh-resolution photographic films for x-ray/EUV/FUV astronomy

Richard B. Hoover, Arthur B. C. Walker II, Craig Edward DeForest, Richard N. Watts, Charles Tarrio

Proceedings Volume 1742, Multilayer and Grazing Incidence X-Ray/EUV Optics for Astronomy and Projection Lithography; (1993) https://doi.org/10.1117/12.140587
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

The quest for ultrahigh resolution full-disk images of the sun at soft X-ray/EUV/FUV wavelengths has increased the demand for photographic films with broad spectral sensitivity, high spatial resolution, and wide dynamic range. These requirements were made more stringent by the recent development of multilayer telescopes and coronagraphs capable of operating at normal incidence at soft X-ray/EUV wavelengths. Photographic films are the only detectors now available with the information storage capacity and dynamic range such as is required for recording images of the solar disk and corona simultaneously with sub arc second spatial resolution. During the Stanford/MSFC/LLNL Rocket X-Ray Spectroheliograph and Multi-Spectral Solar Telescope Array (MSSTA) programs, we utilized photographic films to obtain high resolution full-disk images of the sun at selected soft X-ray/EUV/FUV wavelengths. In order to calibrate our instrumentation for quantitative analysis of our solar data and to select the best emulsions and processing conditions for the MSSTA reflight, we recently tested several photographic films. These studies were carried out at the NIST SURF II synchrotron and the Stanford Synchrotron Radiation Laboratory. In this paper, we provide the results of those investigations.

Citation Download Citation

Richard B. Hoover, Arthur B. C. Walker II, Craig Edward DeForest, Richard N. Watts, and Charles Tarrio "Ultrahigh-resolution photographic films for x-ray/EUV/FUV astronomy", Proc. SPIE 1742, Multilayer and Grazing Incidence X-Ray/EUV Optics for Astronomy and Projection Lithography, (21 January 1993); https://doi.org/10.1117/12.140587

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