GOTO TELESCOPE MOTION CONTROL SYSTEM RIGHT ASCENSION AND DECLINATION DIRECTION WITH THREE MODES OF SPEED USING MICROCONTROLLER ATMEGA2560 Ilham Hidayat Kurniawan, Mochamad Irfan,M.Si , Dr. Ahmad Aminudin, M.Si
Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Indonesia
Observatorium Bosscha, Institut Teknologi Bandung, Indonesia
Abstract
A GOTO telescope motion control system in right ascension and declination direction with three modes of speed using microcontroller ATMega2560 has been made.. This research was pursed in a telescope motion control system that leads to right ascension and declination. The telescope used is one of the telescopes at Bosscha Observatory, the GOTO telescope. The current condition of the GOTO telescope has decreased. This is caused by the motion control system that was applied previously doesn’t work optimally. Therefore this research will discuss and create a new system for telescopes which will use the ATMega2560 microcontroller which is embedded in the Arduino Mega board as the brain of this system. The way this system works is first the ATmega2560 microcontroller will read the first position of the telescope after that the telescope will be moved by the handbox towards right ascension or declination and then the last position of the telescope will be read by the microcontroller. By using this latest system the servo motor in the GOTO telescope can move with three speed modes namely guide, set and slew where the speed of the guide requires a frequency of 1604 Hz, the speed of the set requires a frequency of 51.340 Hz and the slew speed requires a frequency of 501,368 KHz.
Keywords: GOTO telescope, ATMega2560, control system, declination, right ascension
