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Ron Johnson

I have been interested in astronomy since the mid 1960's when I had a second hand 100mm Newtonian reflector. Wanting a larger instrument I worked with a  colleague to construct a 300mm f5.8 Newtonian reflector (including the mirror). The telescope was mounted on an English equatorial mount and located in a home made observatory. The telescope gave good service for more than 25 years. As technology progressed I replaced the Newtonian with a 300mm f10 SCT.

After moving house some years ago it gave me the opportunity to re-configure the observatory to suit the SCT (which required less space than the Newtonian).

In the early days I carried out sketching of the planets and some basic astro-photography. More recently electronic imaging of the Sun, Moon and planets has been my main task. A 102mm f9.8 refractor with full solar filter is used for imaging the sun.

I have been a member of the Association since 1976 and have submitted observations / images to the Solar, Lunar Meteor and Planetary Sections.

Local society membership: Ewell Astronomical Society

2020 Aug 15

Sun
 4  
Sun
 5  
Sun
 6  
Sun
 4  

2020 Aug 1

Sun
 11  
Sun
 9  
Sun
 10  
Sun
 6  
Sun
 6  

2020 Jul 15

2020 Jul 11

2020 Jun 7

Sun
 12  
Sun
 9  

2020 Jun 1

 8  
 7  

2020 May 28

 7  
Sun
 7  
Sun
 5  
Sun
 6  
Sun
 6  

2020 May 11

Sun
 8  
Sun
 8  
Sun
 8  

2020 May 10

 8  
 5  

2020 May 2

 7  
 8  
 9  

2020 May 1

Sun
 10  
Sun
 10  

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