ISSN 00380946, Solar System Research, 2012, Vol. 46, No. 2, pp. 160–169. © Pleiades Publishing, Inc., 2012. Original Russian Text © O.V. Dudnik, P. Podgorski, J. Sylwester, S. Gburek, M. Kowalinski, M. Siarkowski, S. Plocieniak, J. Bakala, 2012, published in Astronomicheskii Vestnik, 2012, Vol. 46, No. 2, pp. 173–183. 160 INTRODUCTION The scientific instruments on board the spacecraft, which were specifically designed to study various phe nomena and objects, can be based on similar or related sensor structures. Such sensors can respond not only to the targeted type of radiation, but also to other, unexpected types that can be a hindrance to the chosen area of research. Thus, the ABC apparatus, designed to study the characteristics of the fluxes of hard X rays and gamma rays from solar flares and installed aboard the loworbiting spacecraft CORONASF (Glyanenko et al., 2009), accumulated a large amount of informa tion about changing count rates in lowenergy and highenergy γbands of extrasolar origin. The distribu tion of count rates, in geographic coordinates of the Earth, clearly showed the area of the polar caps, radi ation belts (RBs), and the Brazilian Magnetic Anom aly (BMA) (Arkhangelskaja et al., 2008). With this apparatus, burst events and quasistationary equato rial eruptions of different types were also observed. The Xray SphinX spectrophotometer was designed and manufactured at the Solar Physics Divi sion of the Space Research Center of the Polish Acad emy of Sciences as a part of the Foton scientific equip ment of the CORONASPHOTON spacecraft (Kotov, 2011). It was designed to study the spectra of solar Xrays in the energy range 1.2–15 keV. The primary data processing showed that the count rates of sensor units in high energy channels are different from zero even during spacecraft nights. The count rate increased sharply with the passage of regions of the BMA and RBs by the satellite, suggesting a possible recording of high energy particles by the spectrophotometer. The sensor unit STEPFD of the electron and pro ton satellite telescope STEPF, whose main objective was to study the dynamics of fluxes of highenergy charged particles, was located in close proximity to the SphinX spectrophotometer. Thus, there was an oppor tunity to conduct a joint analysis of data from the par ticle detection channels of the SphinX spectropho tometer and STEPF telescope channels for recording electrons, protons, and secondary gamma radiation. The analysis of data with a 30second time resolution was performed for the observation period from May 1 to May 14, 2009. XRAY SphinX SPECTROPHOTOMETER AND SATELLITE TELESCOPE FOR ENERGETIC PARTICLES STEPF Four silicon PIN photodiodes served as solar Xray sensors of the SphinX spectrometer (Sylwester et al., 2008; Gburek et al., 2011a; 2011b). These detectors XRay Spectrophotometer SphinX and Particle Spectrometer STEPF of the Satellite Experiment CORONASPHOTON. Preliminary Results of the Joint Data Analysis O. V. Dudnik a , P. Podgorski b , J. Sylwester b , S. Gburek b , M. Kowalinski b , M. Siarkowski b , S. Plocieniak b , and J. Bakala b a Kharkiv National University named after V.N. Karazin, Ukraine b Space Research Center, Polish Academy of Sciences, Solar Physics Division, Wroclaw, Poland Received July 18, 2011 Abstract—A joint analysis is carried out of data obtained with the help of the solar Xray SphinX spectropho tometer and the electron and proton satellite telescope STEPF in May 2009 in the course of the scientific space experiment CORONASPHOTON. In order to determine the energies and particle types, in the anal ysis of spectrophotometer records data are used on the intensities of electrons, protons, and secondary γradi ation, obtained by the STEPF telescope, which was located in close proximity to the SphinX spectropho tometer. The identical reaction of both instruments is noted at the intersection of regions of the Brazilian magnetic anomaly and the Earth’s radiation belts. It is shown that large area photodiodes, serving as sensors of the Xray spectrometer, reliably record electron fluxes of low and intermediate energies, as well as fluxes of the secondary gamma radiation from construction materials of detector modules, the TESIS instrument complex, and the spacecraft itself. The dynamics of electron fluxes, recorded by the SphinX spectrophotom eter in the vicinity of a weak geomagnetic storm, supplements the information about the processes of radial diffusion of electrons, which was studied using the STEPF telescope. DOI: 10.1134/S0038094612020025