A Stand-alone Station and DSP Method for Deep Sky Objects Astrophotography
Abstract
This article presents the basic assumptions and aspects of the design of a stand-alone station for deep sky objects (DSO) astrophotography. It describes the main elements of a project concerned with automatization, remote control and auto-guiding [1-5] of a system. The article also covers in further detail the innovative use of a driver with an ATMEGA16 microcontroller and dedicated software for controlling the astronomical dome and its synchronization with telescope movement. Furthermore, a new concept of reprogrammable digital circuit implementation for auto-guiding systems is shown, which operates with a popular CCD webcam and ST4 compatible equatorial mounts. This idea was verified by the circuit prototype implemented on an Altera Cyclone II FPGA device and tested with real sky objects. A fully functional solution for performing automatic observation is presented. The project was also designed for amateur-astronomy, and therefore, user-friendly configuration and maintenance constituted very important factors, which were taken into consideration.
References
P.F. Li, J.X. Huang, W.X. Xie, L.Q. Li, Intelligent Tracking Algorithm using Fuzzy-based Adaptive ALPHA_BETA Filter for Maneuvering Target, Proc. 9th International Conference on Signal Processing, vol. 1, Beijing, China, 2008, 337-340.
L.P. Wang, S.H. Hu, X.Y. Zhang, Detecting and Tracking of Small Target Under the Background of Sea Level, Proc. 9th International Conference on Signal Processing, vol. 2, Beijing, China, 2008, 989-992.
R. Suszynski, Digital processing of CCD images for auto-guiding astrophotography system, Proc. 15th IEEE International Conference Mixed Design of Integrated Circuits and Systems, Poznan, Poland, 2008.
B. Piatek, Autoguiding on the Macintosh, Macintosh Astronomy Workshop I, Illinois Institute of Technology, September 8, 2005.
D. Ratledge, Digital Astrophotography: The State of the Art, Patrick Moore’s Practical Astronomy Series, Springer-Verlag London Limited, 2005.
R. Suszynski, K. Wawryn, R. Wirski, 2D image processing for auto-guiding system, in proc. IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS), Seoul, 2011.
K. Wawryn, R. Wirski, and Bogdan Strzeszewski Implementation of Finite Impulse Response Systems Using Rotation Structures, in proc. International Symposium on Information Theory and its Applications (ISITA2010), Taichung - Taiwan, 2010.
R. Wirski, Synthesis of orthogonal Roesser model for two-dimensional FIR filters, in proc. International Symposium on Information Theory and its Applications (ISITA2010), Taichung - Taiwan, 2010.
H. Lee, G.E. Sobelman, Performance evaluation and optimal design for FPGA-based digit-serial DSP functions, Computers and Electrical Engineering, vol. 29, no. 2, March 2003, 357-377.
S. Brown, J. Rose, FPGA and CPLD architectures: A tutorial, IEEE Design & Test of Computers, vol. 13, no. 2, Summer 1996, 42-57.
K. Bondalapati, V.K. Prasanna, Reconfigurable computing systems, Proc.of the IEEE, vol. 90, no. 7, July 2002, 1201- 1217.
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