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Repair of motor drive device from October 2020 to January 2021

           
The equatorial mount was manufactured in 1988          
               
         
Failed electronic circuit boards              
               
 
An old right ascension motor, gears
and a  worm wheel in the mount
  An old declination motor          
               
           
Old motors used for 32 years   A declination worm wheel and gears          
               
           
Replacement of motors              
               
           
Replacement of motors              
               
Adjustment of a worm gear   A new declination motor          
               
           
A new right ascension motor in the mount   The mount after repair          
               
           
PC monitor for automatic introduction of celestial bodies   E-ZEUS II, computer-controlled device manufactured by Kisei Co., Ltd.          
               
         

Observation of Jupiter in the southeastern sky at dawn in February 2021

         
               

Special thanks to Mr.Yukihiro Takatsuki, Kisei Co.,Ltd. and Mr.Tetsuo Wakugawa for their support